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How many oxygen molecules may bind to a single molecule of hemoglobin? 6 4 8 2 16

4

Which is not drained by the right lymphatic duct? A. Right side of abdomen B. Right side of thorax C. Right side of head and neck D. Right shoulder E. Right arm

A. Right side of abdomen

Where would you find the trachealis muscle? Between the trachea and the diaphragm Superior to the larynx Between the larynx and the pharynx Between the esophagus and the diaphragm Between the esophagus and the trachea

Between the esophagus and the trachea

Nucleosidase is an enzyme that breaks the A. phosphodiester bond between nucleotides within DNA. B. bond that attaches the phosphate to the nucleoside. C. bond between the sugar and the nitrogenous base of the nucleoside. D. bonds within the nitrogenous bases of rRNA.

C. bond between the sugar and the nitrogenous base of the nucleoside.

What structure forms from the remnants of the follicle following ovulation? Corpus albicans Zona pellucida Corpus luteum Corona radiata Antrum

Corpus luteum

Which of the lymphatic trunks drain into the cisterna chyli? Intestinal trunks Lumbar trunks Intestinal trunks and lumbar trunks Subclavian trunks and jugular trunks Bronchomediastinal trunks and intestinal trunks

Intestinal trunks and lumbar trunks

Which statement is false regarding the oropharynx? It houses the lingual tonsils. It houses the paired palatine tonsils. It is located posterior to the oral cavity. It houses the pharyngeal tonsil. It extends from the soft palate to the level of the hyoid bone.

It houses the pharyngeal tonsil.

Which type of hormone requires a carrier protein in the blood? Autocrine hormone Oligopeptide Water-soluble hormone Lipid-soluble hormone

Lipid-soluble hormone

Which choice best distinguishes between mitosis and meiosis? Mitosis produces somatic cells that are genetically identical to the parent cell, whereas meiosis produces sex cells that are genetically different from the parent cell.Correct Mitosis produces sex cells that are genetically different from the parent cell, whereas meiosis produces somatic cells that are genetically identical to the parent cell. Mitosis produces sex cells that are genetically identical to the parent cell, whereas meiosis produces somatic cells that are genetically different from the parent cell. Mitosis produces somatic cells that are genetically different from the parent cell, whereas meiosis produces sex cells that are genetically identical to the parent cell

Mitosis produces somatic cells that are genetically identical to the parent cell, whereas meiosis produces sex cells that are genetically different from the parent cell.Correct

What structures are used by both the respiratory and digestive systems? Paranasal sinuses Oropharynx and laryngopharynx Laryngopharynx and esophagus Laryngopharynx and larynx Nasal cavity and nasopharynx

Oropharynx and laryngopharynx

Which carries oxygenated blood from the lungs to the heart? Inferior vena cava Superior vena cava Pulmonary trunk Pulmonary veins Pulmonary arteries

Pulmonary veins

Which circuit of the cardiovascular system includes the left ventricle and aorta? Coronary circuit Cardio circuit Pulmonary circuit Systemic circuit

Systemic circuit

What is the primary function of the large intestine? Storage of vitamins and minerals Protein digestion and nutrient absorption Water and electrolyte absorption Secretion of water, salts, sodium bicarbonate, and enzymes

Water and electrolyte absorption

The amount of air that moves into and out of the respiratory tract with each breath is called _____.

airflow

The normal site of fertilization is the fundus of the uterus. ampulla of the uterine tube. body of the uterus. uterine part of the uterine tube. vagina.

ampulla of the uterine tube.

The inferior, conical end of the heart is called the _______________.

apex

The term "canines" describes the teeth that are only found as permanent teeth. are most anterior, used for slicing and cutting. bear dental cusps for cutting and grinding. are lateral to the incisors, used for puncturing and tearing

are lateral to the incisors, used for puncturing and tearing

In positive selection of T-lymphocytes, those cells that bind to self antigens survive. bind self antigens are eliminated. can bind MHC survive. bind to MHC class II are eliminated.

can bind MHC survive.

The inferior esophageal sphincter is also known as the cardiac sphincter. esophageal hiatus. pyloric sphincter. pharyngealgastric sphincter. pharyngoesophageal sphincter.

cardiac sphincter.

Steroid hormones are lipids, derived from glycerol. cholesterol. nucleic acids. polypeptides. amines.

cholesterol.

About 70% of the CO2 that diffuses into systemic capillaries forms carbonic anhydrase, which combines carbonic acid and water to solubilize the CO2. directly dissolves in the plasma. binds to hemoglobin. combines with water to form carbonic acid, which then dissociates into bicarbonate and hydrogen ions.

combines with water to form carbonic acid, which then dissociates into bicarbonate and hydrogen ions.

Fimbriae assist in the movement of sperm through the female reproductive tract. are extensions of the ovarian ligament. enclose the ovary at the time of ovulation. line the ampulla of the uterine tube. are sloughed off during menstruation.

enclose the ovary at the time of ovulation.

The portion of the uterine wall that includes the basal layer is the endometrium. muscularis. myometrium. perimetrium. serosa.

endometrium

The percentage of volume of red blood cells is called the _______________.

hematocrit

IgA is primarily found on the surface of B-lymphocytes. in the thymus, spleen, and lymph nodes. in external secretions such as tears, saliva, and mucus. in blood. in lymph.

in external secretions such as tears, saliva, and mucus.

The volume of the antrum is largest in a(n) __________ follicle. primary secondary mature primordial antral

mature

The juxtaglomerular apparatus is located in the perinephric fat. within the renal sinus. near the vascular pole of the renal corpuscle. in the renal papilla. inside the tubular pole of the glomerulus.

near the vascular pole of the renal corpuscle.

The hepatic portal system allows for the processing of hormones that are secreted by glands and must be directed to their target organs. nutrients and toxins absorbed from the gastrointestinal system into the blood. bacteria that grow in the large intestine but need to be regulated. drugs and toxins in the blood so that they are secreted directly into the urine.

nutrients and toxins absorbed from the gastrointestinal system into the blood.

The "buffy coat" in a centrifuged blood sample is composed of platelets. leukocytes. erythrocytes. erythrocytes and leukocytes. platelets and leukocytes.

platelets and leukocytes.

Granular cells synthesize and release the enzyme renin. angiotensinogen. antidiuretic hormone. calcitriol.

renin

The thoracic duct collects lymph from all of the following except the right foot. right arm. left shoulder. left leg. abdomen.

right arm.

Another name for the tertiary bronchi is the _________ bronchi.

segmental

The letter "T" within "T-lymphocytes" stands for the _________.

thymus

The term "primary lymphoid structure" applies only to lymph nodes. only to red bone marrow. to lymph nodes and MALT. to the red bone marrow and thymus. to the spleen and lymph nodes.

to the red bone marrow and thymus.

Negative selection is the process by which cells learn self-tolerance. true false

true

Tonsils are secondary lymphoid structures. true false

true