Circulatory,

Which of the following transports oxygen-rich blood? a. pulmonary vein b. superior vena cava c. pulmonary artery d. pulmonary trunk

a. pulmonary vein

Which of the following might trigger erythropoiesis? a. moving to a lower altitude b. hypoxia of EPO-producing cells c. decreased tissue demand for oxygen d. an increased number of RBCs

b. hypoxia of EPO-producing cells

The atrioventricular valve on the left side of the heart is often called the... a. pulmonary valve. b. mitral valve. c. cuspid valve. d. aortic valve. e. tricuspid valve.

b. mitral valve.

The cardioinhibitory center controls activities of the ________ motor neurons. a. preganglionic b. parasympathetic c. postganglionic d. sympathetic e. ganglionic

b. parasympathetic

The heart is surrounded by the ________ cavity. a. cardiac b. pericardial c. coronary d. peritoneal e. valvular

b. pericardial

Blood flowing out of a capillary bed first enters structures called ________. a. precapillary sphincters b. venules c. venous valves d. arterial anastomoses e. arteriovenous anastomoses

b. venules

Blood flowing from the left atrium to the left ventricle flows through the ________ valve. a. tricuspid b. pulmonary c. bicuspid d. papillary e. aortic

c. bicuspid

The vessels that permit exchange of materials between the blood and the surrounding interstitial fluid are termed... a. arteries. b. venules. c. capillaries. d. veins. e. arterioles.

c. capillaries.

The first heart sound ("lubb") is produced as the atrioventricular valves ________ and the semilunar valves ________. a. open; close b. close; close c. close; open d. open; open e. The actions of the valves do not contribute to the heart sounds.

c. close; open

The following is a list of vessels and structures that are associated with the heart .1. right atrium 2. left atrium 3. right ventricle 4. left ventricle 5. vena cavae 6. aorta 7. pulmonary trunk 8. pulmonary veins What is the correct order for the flow of blood entering from the systemic circulation? a. 1, 7, 3, 8, 2, 4, 6, 5 b. 5, 3, 1, 7, 8, 4, 2, 6 c. 5, 1, 3, 8, 7, 2, 4, 6 d. 5, 1, 3, 7, 8, 2, 4, 6 e. 1, 2, 7, 8, 3, 4, 6, 5

d. 5, 1, 3, 7, 8, 2, 4, 6

Atrioventricular valves prevent backflow into the... a. venae cavae. b. aorta. c. pulmonary trunk. d. atria. e. ventricles.

d. atria

Blood within the pulmonary veins returns to the ________. a. right ventricle b. right atrium c. left ventricle d. left atrium

d. left atrium

Blood reticulocyte counts provide information regarding ________. a. rate of platelet formation b. WBC ability to defend the body against disease c. clotting ability of the blood d. rate of erythrocyte formation

d. rate of erythrocyte formation

Which of the following is an agranulocyte? a. monocyte b. basophil c. eosinophil d. neutrophil e. erythrocyte

a. monocyte

The clumping of red blood cells, which occurs when incompatible blood types are mixed, is an example of ________. a. agglutination b. sensitization c. immunological surveillance d. opsonization e. precipitation

a. agglutination

The amount of blood pumped by the left ventricle in one minute is called the... a. end diastolic volume. b. cardiac output. c. end systolic volume. d. stroke volume. e. cardiac reserve.

b. cardiac output.

The innermost layer of the heart wall is the... a. parietal pericardium. b. endocardium. c. mediastinum. d. myocardium. e. epicardium.

b. endocardium.

Compared to skeletal muscle, cardiac muscle ________. a. lacks striations b. has gap junctions that allow it to act as a functional syncytium c. cells are larger than skeletal muscle cells d. has more nuclei per cell

b. has gap junctions that allow it to act as a functional syncytium

The arteries that are also called distributing arteries are the ________. a. elastic arteries b. muscular arteries c. arterioles d. capillaries

b. muscular arteries

A person's blood type is determined by the... a. chemical character of the hemoglobin. b. presence or absence of specific surface antigens on the plasma membrane. c. shape of the red blood cells. d. size of the red blood cells. e. number of specific molecules on the plasma membrane.

b. presence or absence of specific surface antigens on the plasma membrane.

Fred's blood was determined to be AB positive. What does this mean? a. He can only receive blood from a donor who is AB positive. b. His blood lacks Rh factor. c. There are no antibodies to A, to B, or to Rh antigens in the plasma. d. Antibodies to A and B are present in the red cells.

c. There are no antibodies to A, to B, or to Rh antigens in the plasma.

Normal heart sounds are caused by which of the following events? a. friction of blood against the chamber walls b. opening of the heart valves c. closure of the heart valves d. excitation of the sinoatrial (SA) node

c. closure of the heart valves

Which statement best describes arteries? a. Only large arteries are lined with endothelium. b. All contain valves to prevent the backflow of blood. c. All carry oxygenated blood to the heart. d. All carry blood away from the heart.

d. All carry blood away from the heart.

Which blood type is generally called the universal donor? a. A b. B c. AB d. O

d. O

The ________ circuit carries blood to and from all parts of the body except the lungs. a. diastolic b. pulmonary c. coronary d. systemic e. systolic

d. systemic

Blood from the systemic circulation returns to the heart by way of the... a. pulmonary veins. b. aorta. c. pulmonary arteries. d. venae cavae. e. coronary sinus.

d. venae cavae.

The cardiac pacemaker cells are located in which of the following? a. bundle branches b. Purkinje fibers c. AV node d. bundle of His e. SA node

e. SA node

Platelets.... a. are phagocytic. b. have multi-lobed nuclei. c. are lymphocytes. d. are a cell with a nucleus. e. are a major component of the vascular clotting system.

e. are a major component of the vascular clotting system.

The function of hemoglobin is to... a. absorb and neutralize the acids generated by active tissues. b. aid in the process of blood clotting. c. carry nutrients from the intestine to the body's cells. d. protect the body against infectious agents. e. bind and transport oxygen and carbon dioxide.

e. bind and transport oxygen and carbon dioxide.

The primary function of white blood cells is to.... a. carry nutrients from the digestive system to the body's cells. b. carry oxygen from the lungs to the body's cells. c. clump together and stick to the blood vessel walls. d. remove carbon dioxide from active cells. e. help defend the body against infectious organisms.

e. help defend the body against infectious organisms