Basic Science Quiz 3

The first step in hemostasis is ________. A. vascular spasm B. conversion of fibrinogen to fibrin C. activation of the intrinsic pathway D. activation of the common pathway

A

Which of the following cause "age spots"? A. increased melanocytes in certain areas of hands and face B. increased production of melanin on the hands and face C. decreased seat production D. decreased sebaceous gland activity

A

Which of the following statements about erythropoietin is true? A. It facilitates the proliferation and differentiation of the erythrocyte lineage. B. It is a hormone produced by the thyroid gland. C. It is a hemopoietic growth factor that prompts lymphoid stem cells to leave the bone marrow. D. Both a and b are true.

A

Which of these plasma proteins plays an important role in maintaining the osmotic concentration of the blood? A. albumin B. fibrinogen C. platelets D. hemoglobin E. globulins

A

Which of the following are factors that slow wound healing? Correct A. infection B. a surgical incision C. a dry wound D. foreign body E. a circular vs linear wound F. a long length of wound G. a venous ulcer H. a wound at less than body temperature

A. infection C. a dry wound D. foreign body E. a circular vs linear wound H. a wound at less than body temperature

Which diseases can have a dermal component? A. thyroid dz B. sepsis C. shock D. Brushfield's Disease E. Systemic Lupus Erythematosus

A. thyroid dz B. sepsis C. shock E. systemic lupus erythematosus

A 16-year-old boy has had a low energy level for as long as he can remember. On physical examination he has a palpable spleen tip. A CBC shows Hgb of 8.8 g/dL, Hct 24.1%, MCV 65 fL, platelet count 187,000/microliter, and WBC count 7400/microliter. His serum ferritin is 3740 ng/mL. A bone marrow biopsy is performed and on microscopic examination reveals a myeloid: erythroid ratio of 1:4, and there is 4+ stainable iron. Which of the following is the most likely diagnosis? A. G6PD deficiency B. Beta-thalassemia C. Sickle cell anemia D. Hereditary spherocytosis E. Malaria

B

A 17-year-old male sustained an injury to his right leg while playing soccer yesterday. On examination, an area of abrasion measuring 3 cm in diameter is seen distal to the anterior knee. What is the first step in the sequence of wound healing for this injury? A. Inflammatory phase B. Hemostasis phase C. Maturation phase D. Proliferative phase

B

A 45-year-old female presents to the clinic for evaluation. She is fit and has no health concerns. She has no past significant medical history. She does not smoke or consume alcohol. She has no symptoms or clinical signs. Her routine complete blood count showed a neutrophil count of 8.2 x 10^9/l. All other laboratory tests were normal. She came back for a follow-up clinic one month later for a repeat blood test, which again revealed a neutrophil count of 8.1 x 10^9/l. What can her provider do at this stage to conclude her persistently high neutrophil count? A. Computed tomographic (CT) chest abdomen pelvis to look for the source of infection B. Examination of the parents' or siblings' blood counts may be of help in these situations. C. Blood and urine cultures to look for the source of infection D. Start her on empirical antibiotics

B

A 68-year-old man has had malaise for the past year. On physical examination, there are no abnormal findings. His Hgb is 10.5 g/dL, Hct 31.5%, MCV 88 fL, platelet count 211,000/microliter, and WBC count 6980/microliter. His total serum iron is 130 microgm/dL total iron binding capacity (TIBC) 230 microgm/dL, and soluble serum transferrin receptor is normal. A bone marrow biopsy is performed and microscopic examination shows that maturation is occurring in all cell lines and there are no abnormal cells seen. Stainable iron in the bone marrow is increased. Which of the following underlying diseases is he most likely to have? A. Diverticulosis B. Hepatitis C infection C. Systemic lupus erythematosus D. Atrophic gastritis E. Fanconi anemia

B

A well circumscribed, non-ulcerated lesion along the basement membrane is most likely a(n): A. malignant neoplasm B. benign neoplasm C. metastatic neoplasm D. atrophied neoplasm

B

After the resting stage of hair growth, each hair normally A. grows more rapidly. B. falls out. C. loses its pigmentation. D. produces more melanocytes. E. increases the depth of the hair follicle.

B

An elevated neutrophil count is usually indicative of A. an allergic reaction. B. a bacterial infection. C. a viral infection. D. a parasitic infection. E. increased antibody production.

B

Given these processes in platelet plug formation: 1 platelet adhesion 2 platelet aggregation 3 platelet release reaction Choose the arrangement that lists the processes in the correct order after a blood vessel is damaged. A. 1, 2, 3 B. 1, 3, 2 C. 3, 1, 2 D. 3, 2, 1 E. 2, 3, 1

B

Hemophilia is characterized by ________. A. inadequate production of heparin B. inadequate production of clotting factors C. excessive production of fibrinogen D. excessive production of platelets

B

Match the disease and layer it affects. NECROTIZING FASCITIS A. dermis B. sub Q tissue C. collection of pus in soft tissues D. epidermis

B

Match the terms. PAPULE A. area of destruction of entire epidermis B. solid elevation less than 0.5cm in diameter C. flakes of cornified skin D. flat area of color change E. flat elevated surface found on skin or mucous membrane F. large bister greater than 1.0cm G. solid mass larger than 1.0 cm H. small blister fluid within or under epidermis

B

Matching: Filaggrin A. deficient in melanin B. deficient in atopy C. shrunken cell nucleus D. tight junction between cells E. a type of necrosis

B

Melanin A. production occurs in melanocytes and keratinocytes. B. is packaged into vesicles called melanosomes. C. is present in large quantities on the soles of the feet. D. is responsible for skin color, but not hair color. E. all of these

B

Monocytes A. are the smallest white blood cells. B. increase in number during chronic infections. C. give rise to neutrophils. D. produce antibodies.

B

Most of the cells of the epidermis are A. fibroblasts. B. keratinocytes. C. Langerhans cells. D. macrophages. E. melanocytes.

B

People with ABO blood type O ________. A. have both antigens A and B on their erythrocytes B. lack both antigens A and B on their erythrocytes C. have neither anti-A nor anti-B antibodies circulating in their blood plasma D. are considered universal recipients

B

Striae occur as a result of A. pimples. B. overstretching the dermis. C. losing too much epidermis. D. too many fibers in the hypodermis. E. loss of hair follicles.

B

The mnemonic ABCDE is used when evaluating a pigmented lesion. What does it stand for? A. Asymmetry-Border-Color-Depth-Eroding B. Asymmetry-Border-Color-Diameter-Evolving C. Actinic-Bleeding-Color-Depth-Evil D. Atrophic-Border-Color-Diameter-Evolving

B

The specific layer that shapes the ridges for fingerprints and footprints is the A. hypodermis. B. papillary layer of the dermis. C. reticular layer of the dermis. D. underlying muscle layer. E. superficial bony layer.

B

What is the first step in managing a febrile patient who is neutropenic? Know this! A. Chest radiograph B. Blood cultures followed immediately by antibiotics C. Blood cultures and wait for the results before beginning antibiotics D. Repeat temperature measurement in 30 minutes

B

Which of the following describes a neutrophil? A. abundant, agranular, especially effective against cancer cells B. abundant, granular, especially effective against bacteria C. rare, agranular, releases antimicrobial defensins D. rare, granular, contains multiple granules packed with histamine

B

Which of the following is the best treatment for chemotherapy associated neutropenia? A. Blood transfusion B. Administering filgrastim C. Strict hand washing D. Bone marrow transplant

B

Which of these is NOT considered to be a cause of acne? A. hormones, especially testosterone B. a diet rich in fatty foods and chocolate C. abnormal keratinization of hair follicles D. an increase in sebum production E. the bacterium Propionibacterium acnes

B

Which of these is the type of hair found on the fetus, but is not present after birth? A. terminal hair B. lanugo C. vellus hair D. both a and b

B

Which of these parts of the body have the most merocrine sweat glands? A. margins of the lips B. soles of the feet C. forearm D. leg E. back of neck

B

Which of these substances is not required for normal red blood cell production? A. folate B. vitamin K C. iron D. vitamin B12

B

Which of the following are hallmarks of cancer? A. early tumor cell pyknosis B. cell immortalization C. angiogenesis D. resistance to apoptosis E. extra stable genes F. ignore growth stop signals G. undergo hyperplasia

B. cell immortalization C. Angiogenesis D. Resistance to apoptosis F. ignore growth stop signals

A 40-year-old male comes to the clinic for a routine follow up. The last note from another clinician mentions an increase in the cell line with an elevated number of cells with large cytoplasmic granules that obscure the cell nucleus. What is the best initial step in the workup of a patient with a chronic condition? A. Complete blood count and comprehensive metabolic panel (CMP) B. CBC with differential and CMP C. Serum tryptase D. CBC with differential, CMP, and serum tryptase

D

A 50-year-old gentleman who is a high school teacher presents to the primary care physician with the complaint of headaches 2/10 and weight loss over a 2 month period. Further evaluation by imaging of the brain showed almost 20 lesions concerning for metastatic cancer. CT of the chest, abdomen, and pelvis showed multiple lesions in the liver. The biopsy of the lesion showed a BRAF-wild type melanoma. The patient mentioned his preference to continue to teach as long as possible and would not prefer therapy that has effects on cognition. His performance status is excellent. Which of the following treatment would be recommended? Level 3 - Difficult A bit hard this early? A. Stereotactic radiosurgery B. Dabrafenib and trametinib C. Whole-brain radiotherapy D. Ipilimumab and nivolumab

D

A 6-year-old female is brought to the clinic for nasal congestion, rhinorrhea, sneezing, and a dry cough. Laboratory investigations show marked eosinophilia and increased serum IgE. Her family history is significant for asthma in the mother and eczema in an elder brother. Which of the following chromosomal locations are related to the underlying condition in this case? A. 3p B. 1p C. 11p D. 5q

D

A 65-year-old farmer presents with a lesion on his face. He has noticed that the lesion occasionally bleeds when he towel dries his face, and the lesion has slowly grown over time. He denies any medical problems and does not smoke. The lesion is about 1 cm by 2 cm and has an uneven border. It is slightly elevated, pink, and translucent and has a few crusted areas of erosion within its borders. The lesion is located next to the base of the nose. What is the most likely diagnosis? A. Squamous cell carcinoma B. Melanoma C. Keratoacanthoma D. Basal cell carcinoma

D

A patient has been suffering for 2 months with a chronic, watery diarrhea. A blood test is likely to reveal ________. A. a hematocrit below 30 percent B. hypoxemia C. anemia D. polycythemia

D

An injection is administered through the skin using a hypodermic needle. Identify the first integumentary structure through which the needle will pass. A. papillary layer B. reticular layer C. hypodermis D. epidermis

D

Atrophy is: A. cell death B. increase in cell size C. malignancy D. decrease in cell size E. cell change type

D

Hemolytic disease of the newborn is a risk during a subsequent pregnancy in which ________. A. a type AB mother is carrying a type O fetus B. a type O mother is carrying a type AB fetus C. an Rh+ mother is carrying an Rh- fetus D. an Rh- mother is carrying a second Rh+ fetus

D

In people of darker complexion, melanomas appear disproportionately more often on which body part? A. Trunk B. Crown of head C. Forearms D. Soles of feet

D

In which of these layers are melanocytes found? A. dermis B. hypodermis C. stratum corneum D. stratum basale E. stratum lucidum

D

Janeway lesions are seen in: A. dermal infections B. liver failure C. renal failure D. heart disease E. after shock occurs

D

Match the disease and layer it affects. ERYSIPELAS A. dermis B. sub Q tissue C. collection of pus in soft tissues D. epidermis

D

Match the terms. MACULE A. area of destruction of entire epidermis B. solid elevation less than 0.5cm in diameter C. flakes of cornified skin D. flat area of color change E. flat elevated surface found on skin or mucous membrane F. large bister greater than 1.0cm G. solid mass larger than 1.0 cm H. small blister fluid within or under epidermis

D

Matching: Desmosome A. deficient in melanin B. deficient in atopy C. shrunken cell nucleus D. tight junction between cells E. a type of necrosis

D

Red blood cells A. are the least numerous formed element in the blood. B. are phagocytic cells. C. are produced in the yellow marrow. D. do not have a nucleus. E. all of the above.

D

Stretch marks result from A. bleeding into the epidermis B. bleeding into the dermis C. photoaging of the skin D. torn collagen fibers

D

The chemical that is involved in the breakdown of a clot (fibrinolysis) is A. antithrombin. B. fibrinogen. C. heparin. D. plasmin. E. sodium citrate.

D

The extrinsic clotting pathway A. begins with the release of thromboplastin (tissue factor). B. leads to the production of prothrombinase. C. requires Ca2+. D. all of the above.

D

The production of healthy erythrocytes depends upon the availability of ________. A. copper B. zinc C. vitamin B12 D. copper, zinc, and vitamin B12

D

Which letter is the stratum spinosum?

D

Which of the following are true regarding basement membranes? A. if present are a sign of disease B. seen in skin and brain only C. are living specialized cells D. bullous pemphigoid occurs at BMZ E. all answers are correct

D

Which of the following plasma proteins is not produced by the liver? A. fibrinogen B. alpha globulin C. beta globulin D. immunoglobulin

D

Which of these changes occurs in the blood in response to the initiation of a vigorous exercise program? A. increased erythropoietin production B. increased concentration of reticulocytes C. decreased bilirubin formation D. both a and b E. all of the above

D

A 3-year-old child is noted to have small pinpoint hemorrhages on the skin, appearing over the past 3 days. On examination the child's vital signs are normal. There are petechae over skin of extremities and trunk. A CBC shows Hgb 14.3 g/dL, Hct 43%, MCV 90 fL, platelet count 19,300/microliter, and WBC count 9370/microliter. This condition resolves over the next month without treatment. Which of the following is the most likely antecedent event for this child's illness? A. Acetylsalicylic acid (aspirin) ingestion B. Congenital HIV infection C. Dietary cobalamin deficiency D. Repetitive trauma E. Respiratory syncytial virus infection F. Sulfonamide ingestion

E

A 53-year-old man has had constant dull pain in his lower right back for the past 4 months. On physical examination there is tenderness on percussion of his right costovertebral angle. An abdominal CT scan reveals a 6 cm mass in the upper pole of the right kidney. A CBC shows: Hgb 21.3 g/dL, Hct 64.0%, MCV 96 fL, platelet count 199,000/microliter, and WBC count 8230/microliter. Serum chemistries include glucose 77 mg/dL, urea nitrogen 17 mg/dL, and creatinine 1.1 mg/dL. Which of the following is the most likely cause for his findings? A. Polycythemia rubra vera B. Erythroleukemia C. Hemophilia A D. Diabetes insipidus E. Increased erythropoietin

E

A major function of the skin is protection from A. abrasion. B. ultraviolet light. C. entry of microorganisms. D. dehydration. E. all of these

E

Cyanosis is a condition caused by A. consuming large amounts of carotene. B. increased blood flow to the skin. C. albinism. D. exposure to ultraviolet light. E. a decrease in blood oxygen.

E

Match the terms. PLAQUE A. area of destruction of entire epidermis B. solid evelvation less than 0.5cm in diameter C. flakes of cornified skin D. flat area of color change E. flat elevated surface found on skin or mucous membrane F. large bister greater than 1.0cm G. solid mass larger than 1.0 cm H. small blister fluid within or under epidermis

E

Matching: Caseous A. deficient in melanin B. deficient in atopy C. shrunken cell nucleus D. tight junction between cells E. a type of necrosis

E

Platelets A. are derived from megakaryocytes. B. are cell fragments. C. have surface molecules that attach to collagen. D. play an important role in clot formation. E. all of the above.

E

Protective functions of the integumentary system include all of these EXCEPT: A. callus formation prevents damage by friction. B. nails protect the ends of digits. C. hairs in the nose and ears prevent entry of foreign materials. D. hair protects the head from abrasion and ultraviolet light. E. skin glands produce alkaline secretions that kill bacteria.

E

The hair follicle A. has an epithelial root sheath and a dermal root sheath. B. can provide epithelial cells for skin repair. C. contains only the stratum germinativum at the hair bulb. D. has an arrector pili muscle attached. E. all of these

E

Which of these is a function of blood? A. clot formation B. protection against foreign substances C. maintenance of body temperature D. regulation of pH and osmosis E. all of the above

E

A 46-year-old man has had worsening arthritis and swelling of his feet for the past year. On physical examination he has rales audible in all lung fields. A chest radiograph shows cardiomegaly and pulmonary edema. Laboratory studies show Hgb 13.0 g/dL, Hct 39.1%, MCV 86 fL, platelet count 255,500/uL, and WBC count 5920/uL. His serum iron is 406 microgram/mL with iron binding capacity 440 microgram/mL and ferritin 830 ng/mL. Which of the following is the most likely diagnosis? A. Beta-thalassemia B. Autoimmune hemolytic anemia C. Anemia of chronic disease D. Polycythemia vera E. Pernicious anemia F. Hereditary hemochromatosis

F

Match the terms. BULLA A. area of destruction of entire epidermis B. solid elevation less than 0.5cm in diameter C. flakes of cornified skin D. flat area of color change E. flat elevated surface found on skin or mucous membrane F. large bister greater than 1.0cm G. solid mass larger than 1.0 cm H. small blister fluid within or under epidermis

F

Which of the following are the red arrows pointing to? image A. stratum lucidum B. stratum corneum C. stratum basale D. stratum granulosum E. stratum spinosum F. basement membrane G. dermis H. hypodermis

F

Which of the following is the strongest holding layer in a skin laceration repair? A. stratum lucidum B. stratum corneum C. stratum basale D. stratum granulosum E. stratum spinosum F. dermis G. hypodermis

F

What are the common S/S of an abcess? A. tenderness B. cool to touch C. erythematous D. pale E. warm to touch F. fluctuant mass G. very hard mass

F. fluctuant mass

Match the terms. TUMOR A. area of destruction of entire epidermis B. solid elevation less than 0.5cm in diameter C. flakes of cornified skin D. flat area of color change E. flat elevated surface found on skin or mucous membrane F. large bister greater than 1.0cm G. solid mass larger than 1.0 cm H. small blister fluid within or under epidermis

G

Match the terms. VESICLE A. area of destruction of entire epidermis B. solid elevation less than 0.5cm in diameter C. flakes of cornified skin D. flat area of color change E. flat elevated surface found on skin or mucous membrane F. large bister greater than 1.0cm G. solid mass larger than 1.0 cm H. small blister fluid within or under epidermis

H

Matching: Albinism A. deficient in melanin B. deficient in atopy C. shrunken cell nucleus D. tight junction between cells E. a type of necrosis

A

Match the image number to it's name.

1. Roth Spot 2. Drusen 3. Optic cupping 4. Cotton wool spot 5. detached retina

A 41-year-old woman comes to the clinician with a complaint of rash that comes and goes, but she has had it since infancy. She reports that the rash has worsened for the past 1 weekend is associated with intense itch. The itch has made sleeping very difficult. The patient is hemodynamically stable. She does not take any medicine nor smoke. She has had 3 sexual partners in the back 6 months and uses condoms for protection. On physical examination, neck, antecubital fossa, and wrists have thickened plaques with erythema, erosion from scratching, and crusting. There is thick purulent drainage from several areas of the rash. Which of the following is the most likely cause of acute worsening in this patient? A. Bacterial superinfection B. Herpes simplex infection C. Tinea corporis D. Sezary syndrome

A

A patient has been experiencing severe, persistent allergy symptoms that are reduced when she takes an antihistamine. Before the treatment, this patient was likely to have had increased activity of which leukocyte? A. basophils B. neutrophils C. monocytes D. natural killer cells

A

An abscess is a form of: A. liquefactive necrosis B. apoptosis C. caseous necrosis D. fat necrosis E. wet gangrene

A

Cell division occurs in which layer of the epidermis? A. stratum basale B. stratum corneum C. stratum granulosum D. stratum lucidum E. stratum reticularis

A

Correct Which of the following statements about mature, circulating erythrocytes is true? A. They have no nucleus. B. They are packed with mitochondria. C. They survive for an average of 4 days. D. All of the above

A

Elderly persons may become less able to maintain stable body temperatures because A. their sweat glands are replaced by fibrous tissue and their activity decreases B. their sebaceous glands become overactive C. they sweat excessively D. the skin becomes too oily

A

Erysipelas occurs in what layer? A. epidermis B. dermis C. Sub Q tissue D. superficial fascia E. deep fascia F. muscle

A

Exposure to ultraviolet light causes the skin to darken by stimulating the production of A. melanin. B. carotene. C. hemoglobin. D. cyanin.

A

Match the disease and layer it affects. CELLULITIS A. dermis B. sub Q tissue C. collection of pus in soft tissues D. epidermis

A

Match the terms. ULCER A. area of destruction of entire epidermis B. solid elevation less than 0.5cm in diameter C. flakes of cornified skin D. flat area of color change E. flat elevated surface found on skin or mucous membrane F. large bister greater than 1.0cm G. solid mass larger than 1.0 cm H. small blister fluid within or under epidermis

A

A 19-year-old male is admitted following three episodes of right-sided tonic-clonic seizures associated with vomiting and loss of consciousness for ten minutes. He has no past medical history and takes no regular medications. He recently returned from a two-week vacation in Mexico. His traveling companion says he has had no recent fevers, confusion, neurological deficits, or recent trauma. His vital signs are all within normal limits. On examination, the patient is awake but not alert. Auscultation of the lung and heart is normal. Neurological exam reveals normal motor strength and sensations in the left upper and lower extremities, and 4/5 strength with normal sensation in the right upper and lower extremities. There is no meningeal irritation, and his tendon reflexes are normal. Blood tests show eosinophilia, and the interferon-gamma release assay is negative. An MRI brain scan reveals an 8 mm focal lesion in the left parietal lobe associated with perilesional edema. The rest of the brain parenchyma and leptomeninges appear normal. What is the most likely diagnosis? A. Bacterial meningitis B. Seizure disorder C. Neurocysticercosis D. Primary brain tumor

C

A 36-year-old male is brought to the emergency department after he fell off from the bike. The patient is not in distress and is oriented to time, place, and person. He has abrasions to his face, scalp, arms, and abdomen. Physical exam reveals a laceration of his right upper eyelid. What is expected in this anatomical site? A. Thick hairless skin with a prominent stratum spinosum layer B. Thin skin with a prominent stratum lucidum layer C. Thin skin lacking a stratum lucidum layer D. Thick skin with minimal hair lacking a stratum granulosum layer

C

A 45-year-old female presents to the clinic with a very tender lesion under her right second toenail. The patient has trouble wearing shoes and touching the area due to the pain. Physical exam reveals a blueish growth underneath the nail bed. If the lesion is due to a tumor, which of the following tissue is it most likely to originate from? Level 4 - Expert A. Light touch receptors B. Vibration and proprioception receptors C. Thermoregulation smooth muscle D. Nail matrix formation

C

A 50-year-old man presents for a routine checkup. He has no past medical history and does not smoke, drink alcohol, or take recreational drugs. He is a farmer by profession and spends most of his day outdoors. On examination, there is a 1 cm pigmented raised lesion on the extensor surface of the forearm. The lesion has irregular borders and is asymmetrical. An excisional biopsy is performed, and histopathology confirms the lesion to be malignant melanoma. The prognosis of this patient's condition is based most often on which of the following parameters? A. Size of the lesion B. The superficial spread of the lesion C. Depth of the lesion D. Mitotic activity

C

A melanoma is a type of ___. A. sarcoma B. blastoma C. carcinoma D. benign lesion

C

A patient presents with a malignant melanoma on her shoulder. Biopsy showed it to be 1.3 mm deep. There are no palpable lymph nodes in the neck or axilla. What test should be done to determine the location of the sentinel lymph node biopsy? Can you at least remove some of the answers? A. CT chest, abdomen, and pelvis with intravenous contrast B. Ultrasound of neck and axilla C. Lymphoscintigraphy D. No test is needed

C

In which layer of epidermis do the nucleus and other organelles disintegrate, and the cells die? A. stratum basale B. stratum corneum C. stratum granulosum D. stratum lucidum E. stratum spinosum

C

Match the disease and layer it affects. ABSCESS A. dermis B. sub Q tissue C. collection of pus in soft tissues D. epidermis

C

Match the terms. SCALE A. area of destruction of entire epidermis B. solid elevation less than 0.5cm in diameter C. flakes of cornified skin D. flat area of color change E. flat elevated surface found on skin or mucous membrane F. large bister greater than 1.0cm G. solid mass larger than 1.0 cm H. small blister fluid within or under epidermis

C

Matching: Pyknotic A. deficient in melanin B. deficient in atopy C. shrunken cell nucleus D. tight junction between cells E. a type of necrosis

C

Rh-negative mothers who receive a RhoGAM injection are given that injection to A. initiate the synthesis of anti-Rh antibodies in the mother. B. initiate anti-Rh antibody production in the baby. C. prevent the mother from producing anti-Rh antibodies. D. prevent the baby from producing anti-Rh antibodies.

C

Which of the following are true for urticaria? A. inflammation of the skin B. result of inhalation of an allergen C. often a contact dermatitis D. lesions are untreatable but will eventually disappear on their own E. only see on face and hands

C

Which of the following statements about blood is true? A. Blood is about 92 percent water. B. Blood is slightly more acidic than water. C. Blood is slightly more viscous than water. D. Blood is slightly more salty than seawater.

C

Which of these is not a component of plasma? A. nitrogen B. sodium ions C. platelets D. water E. urea

C

Which type of burn is described by all of the following characteristics? 1. epidermis and dermis destroyed 2. initially painless 3. much scar tissue formed A. first-degree burn B. second-degree burn C. third-degree burn

C