Lab 228

A hematocrit of _______ would be about normal. 99% 55% 45% 1%

45%

If a sample of blood reacts with anti-A antibody and clumps, but not with anti-B antibody, this blood must be of type ______. A B AB O

A

A patient with type A+ blood can receive which of the following blood types?

A+, 0+

A segment of an ECG is one or more waves and a straight line. a straight line between two waves. two waves. a time interval of isoelectric potentials.

a straight line between two waves.

Select all of the following that are formed elements in blood? red blood cells white blood cells platelets

all

hat problem is most likely the case when a person has a high count of lymphocytes? allergic reaction inflammatory processes immunodeficiency infection

infection

Which of the following are veins that compose the hepatic portal circulation? celiac trunk inferior mesenteric vein inferior vena cava splenic vein superior mesenteric vein

inferior mesenteric vein splenic vein superior mesenteric vein

An antigen is a molecule: that is produced by a B lymphocyte. that is also called an antibody. that is also called a red blood cell that has the capacity to initiate an immune response.

that has the capacity to initiate an immune response.

The --------- is a reservoir for red and white blood cells.

spleen

Which of the following statements best describes what you would expect to happen if a transfusion recipient had blood type 0 and a donor had blood type AB? Agglutination would occur as the recipient's antibodies bind to the donors antigens There would be no transfusion reaction. Agglutination would occur as the recipient's antigens bind to the donors antibodies. Agglutination would occur since both the recipient and donor have the same antibodies.

Agglutination would occur as the recipient's antibodies bind to the donors antigens

If an agglutination reaction only occurs when Anti-B serum is applied, then the blood type must be type ________. A B AB O

B

Cell is full of dark-purple staining granules; nucleus is bilobed (=two lobes).

Basophil

Contain blue or purple cytoplasmic granules

Basophils

How is the differential white blood cell count determined? By counting a set number of white blood cells and noting the percentages of different types of cells By counting all white blood cells and noting the number of different types of cells By counting a set number of each type of white blood cell By counting all blood cells and noting the number of white blood cells

By counting a set number of white blood cells and noting the percentages of different types of cells

At which point on an ECG is the second heart sound, "dupp," heard? QRS complex End of T wave PR segment P wave

End of T wave

A measure of the percentage of erythrocytes in whole blood is called erythropoiesis. T/F

F

Peyer patches are located in the duodenum. T/F

F

Preeclampsia involves endothelial cell effects that result in vasoconstriction, and therefore, low blood pressure. T/F

F

Tendinous cords in the heart tether the cusps of the semilunar valves to prevent the backflow of blood into the ventricles. T/F

F

The basic unit of lymphatic tissue is called a lymph node. T/F

F

The hematocrit is the percentage of packed leukocytes in whole blood. T/F

F

The right and left ventricles pump different volumes of blood due to the differences in ventricular wall thickness. T/F

F

The right ventricle pumps a smaller volume of blood than the left ventricle. T/F

F

To remove the heart from a donor's chest, a surgeon will need to cut through the visceral layer of the serous pericardium. T/F

F

When considering components of total blood cholesterol, _______________ (HDL/LDL) are considered to be the "good" type.

HDL

What is the most important first step in differential white blood cell count? Making a good blood smear Recognizing WBCs Finding a basophil Making sure your blood sample is fresh

Making a good blood smear

Which ECG component corresponds to the depolarization of the ventricles QRS complex ST segment T wave P wave

QRS complex

Which of the following can be used to calculate heart rate? PQ segment R-R interval ST segment PQ interval

R-R interval

The most abundant of the formed elements in the blood are the _____. RBCs WBCs leukocytes platelets

RBCs

What ECG component corresponds to the time it takes for the ventricles to contract? PQ interval ST segment QRS complex P wave

ST segment

A characteristic feature of a muscular artery is the presence of an internal and external elastic lamina. T/F

T

Peyer patches have a darker-staining germinal center and a lighter-staining outer region. T/F

T

The thymus contains connective tissue septae that separate the gland into lobules. T/F

T

When referencing a structure present in the interatrial septum, the prenatal structure is called the foramen ovale, whereas the postnatal structure is called the fossa ovalis. T/F

T

Which ECG component corresponds to the repolarization of the ventricles? P wave T wave QRS complex ST segment

T wave

Pulmonary and aortic semilunar valves each contain __________________ (two/three) cusps and prevent back flow of blood into the ventricle

Three

Why do you need to allow the slide to dry between steps when making a blood smear? To prevent solutions from simply mixing before staining the cells To make sure water enters the cells To ensure the proper size of cells To produce the proper shape of the overall smear

To prevent solutions from simply mixing before staining the cells

Select all of the following antibodies found in the blood of a person with blood type A? anti-A antibodie anti-B antibodies anti-O antibodies anti-D antibodies

anti-B antibodies

Elizabeth is 20 weeks pregnant with her second child. Her blood type is AB negative. Her obstetrician is concerned about the possibility of a reaction between Elizabeth's blood and the baby's blood because of the father's blood type. The obstetrician prescribes RhoGAM for Elizabeth. RhoGAM contains immunoglobulins that prevent the production of certain antibodies. What condition does the obstetrician fear may be a complication with this pregnancy in the event that RhoGAM is not given? anti-Rh antibodies from the blood of the fetus could attack the mother's red blood cells anti-Rh antibodies from the blood of the mother could attack red blood cells of the fetus anti-Rh antibodies from the blood of the mother could attack white blood cells of the fetus anti-Rh antibodies from the blood of the fetus could attack the mother's white blood cells

anti-Rh antibodies from the blood of the mother could attack red blood cells of the fetus

What do you measure when measuring "blood pressure"? ventricular pressure atrial pressure venous pressure arterial pressure

arterial pressure

he _____ line is a straight line used as a point of departure for the electrical activity recorded in an ECG.

base

Which formed element composes less than 1% of whole blood and is involved in defense against disease? basophil lymphocyte monocyte neutrophil platelet

basophil

Which of the following systems would be affected by splenomegaly (enlarged spleen)?

cardiovascular lymphatic

Constriction of arterioles ______________________ blood flow into capillary beds. decreases increases does not change

decreases

When pharyngeal tonsils become inflamed, they are referred to as adenoids. Based on the location of the pharyngeal tonsils which of the following symptoms would you expect a patient to experience due to swollen adenoids? blockage of taste buds difficulty breathing through the nose increased saliva production

difficulty breathing through the nose pain in the nasopharynx

Which one of the following accurately describes an ECG tracing for a patient who presents with an AV node block? absent P waves absent QRS complexes disconnected P waves and QRS complexes inverted T waves

disconnected P waves and QRS complexes

The ligamentum arteriosum is a remnant of the fetal (--------) ductus arteriosus foramen ovale , whereas the fossa ovalis is a remnant of the fetal (---------) ductus arteriosus foramen ovale .

ductus arteriosus, foramen ovale

Cell full of red-pink staining granules; nucleus is bilobed (=two lobes).

eosinophil

Contain orange or red cytoplasmic granules

eosinophils

The _____ rate can be determined by counting the number of QRS complexes on the ECG during one minute.

heart

The hepatic portal system is a system of veins that drains blood into the Inferior vena cava liver

liver

Which of the following is a lymphatic organ that has both afferent and efferent lymphatic vessels? lymph node spleen thymus tonsil vermiform appendix

lymph node

Large round nucleus takes most of the space in the cell; small cytoplasm ring around nucleus.

lymphocyte

Which cell has a large nucleus that fills most of the cell? red blood cell lymphocyte eosinophil platelet

lymphocyte

When you move the slide in the hemoglobinometer, your goal is to _____ the two colors.

match

Large cell, twice as big as a red blood cell. Nucleus is "bean" or "C" shaped.

monocyte

Which white blood cell represents the greatest percentage in a normal differential count? basophil eosinophil monocyte neutrophil

neutrophil

Polymorphonuclear (=nucleus twisted and segmented); slightly pinkish granular cytoplasm

neutrophils

Contain lavender cytoplasmic granules

neutrophisl

A patient's hemoglobin content is determined to be 17 g/100ml. That is _____. normal for both a man or a woman normal for a man, but high for a woman low for a woman, but normal for a man low for both a woman or a man

normal for a man, but high for a woman

A patient's hematocrit is determined to be 45%. That is _____. normal for both a man or a woman low for a man, but normal for a woman low for a woman, but normal for a man low for both a woman or a man

normal for both a man or a woman

The capillary tube should be sealed _____. on one side after we put blood in so that the blood will not be pushed out in the centrifuge on both sides after we put blood in so that no blood can be spun out of it on one side before we put blood in so that it will not leak out only if we use it as a counterweight for blood filled capillaries in the centrifuge

on one side after we put blood in so that the blood will not be pushed out in the centrifuge

An interval of an ECG is two waves. a straight line between two waves. one or more waves and a straight line. a time interval of isoelectric potentials.

one or more waves and a straight line.

The structures that increase forcefulness of contraction within the right atrium are _____________ muscles, whereas the structures that prevent eversion of the AV valves are ____________ muscles. pectinate; papillary papillary; intercalated trabecular; pectinate tendineal; trabecular

pectinate; papillary

Which of the following is NOT a function of the lymphatic system? absorption of dietary fats production and proliferation of lymphocytes production of erythrocytes transport excess interstitial fluid back into the blood

production of erythrocytes

If the blood from an individual with type AB blood is mixed with anti-A plasma and anti-B plasma: the anti-A plasma will show agglutination but the anti-B plasma will not. the anti-B plasma will show agglutination but the anti-A plasma will not. no agglutination will be seen. the anti-A plasma and the anti-B plasma will show agglutination.

the anti-A plasma and the anti-B plasma will show agglutination.

With the hematocrit measurement we determine one of the important factors that determine _____. the oxygen transport capacity of a person's blood the physical endurance level of an individual which type of blood could be transfused to that person how well the blood is saturated with oxygen

the oxygen transport capacity of a person's blood

Which of the following is a lymphatic organ that contains crypts? lymph node spleen thymus tonsil vermiform appendix

tonsil

You need to stir the blood with the hemolysis applicator _____. until it appears clear, not cloudy for about 10 seconds until it coagulates until it turns dark red

until it appears clear, not cloudy

Which of the following is an anatomic feature unique to veins? smooth muscle in the tunica media valves to prevent backflow of blood vasa vasorum in the tunica externa tunica media consists only of endothelium and a basement membrane

valves to prevent backflow of blood

Oxygenated blood returns to the left atrium through the pulmonary _________________. arteries veins capillaries

veins

nnie, a 50-year-old female, complains of fatigue, weakness, and dizziness. Her neutrophil count is a little low but her lymphocyte count is very high. Which type of infection does she most likely have? viral bacterial

viral

Select all of the following that relate to hearing the last Korotkoff sound. when inflated, cuff totally closes the artery when deflating, the cuff and the artery is partially open when cuff is deflated and does not constrict the artery at diastolic blood pressure

when cuff is deflated and does not constrict the artery at diastolic blood pressure

The formed elements in blood that are involved in defense are called the _____.

white blood cells