Test: The Cardiovascular System

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the layer of the heart wall that contains cardiac muscle tissue is the: a) visceral pericardium b) parietal pericardium c) endocardium d) epicardium e) myocardium

e

the atria of the heart: a) are located superiorly and are the receiving chambers of the heart b) are located inferiorly and are the receiving chambers of the heart c) are locates superiorly and are the discharging chambers of the heart d) are located inferiorly and are the discharging chambers of the heart e) are located posteriorly and are the discharging chambers of the heart

a

which of the following areas receives blood directly from the four pulmonary veins: a) lungs b) right atrium c) right ventricle d) left atrium e) left ventricle

d

which of the following blood vessels is NOT part of the systemic circulation: a) coronary arteries b) aorta c) inferior vena cava d) carotid arteries e) pulmonary arteries

e

the mitral valve prevents blood from flowing from the: a) right ventricle to the right atrium b) left ventricle to the left atrium c) left atrium to the right atrium d) right atrium to the left atrium e) left ventricle to the right ventricle

b

the tricuspid valve is located between the: a) right atrium and left atrium b) right atrium and right ventricle c) right ventricle and left ventricle d) left atrium and left ventricle e) right ventricle and the pulmonary trunk

b

the superior vena cava empties: a) oxygenated blood into the left atrium b) oxygenated blood into the left ventricle c) deoxygenated blood into the right atrium d) deoxygenated blood into the right ventricle e) deoxygenated blood into the left atrium

c

which of the following blood vessels carries oxygenated blood: a) superior vena cava b) inferior vena cava c) coronary sinus d) pulmonary artery e) pulmonary vein

e

the pacemaker of the heart is the: a) sinoatrial (SA) node b) atrioventricular (AV) node c) atrioventricular (AV) bundle d) medulla oblongata e) vagus nerve

a

a heart rate that is substantially slower than normal is called: a) bradycardia b) tachycardia c) fibrillation d) angina pectoris e) myocardial infarction

a

which vessel receives blood during right ventricular systole: a) pulmonary veins b) pulmonary arteries c) aorta d) superior vena cava e) coronary arteries

b

blood enters which of these vessels during ventricular systole: a) aorta b) pulmonary veins c) pulmonary arteries d) both A and B e) both A and C

e

the volume of blood pumped out by a ventricle with each beat of the heart is called the: a) cardiac output b) cardiac cycle c) stroke volume d) heart rate e) diastolic pressure

c

the path of blood flow in the vascular system is: a) arterioles, arteries, capillary beds, venules, veins b) arterioles, arteries, capillary beds, veins, venules c) arterioles, arteries, venules, veins, capillary beds d) arteries, arterioles, capillary beds, veins, venules e) arteries, arterioles, capillary beds, venules, veins

e

an increase in parasympathetic nervous system activity causes: a) a decrease in heart rate and cardiac output b) a decrease in heart rate and an increase in cardiac output c) an increase in heart rate and cardiac output d) an increase in heart rate and a decrease in cardiac output e) no change in heart rate and cardiac output

a

compared to an artery, the wall of a vein differs in which of the following ways: a) it contains smooth muscle b) it consists of three layers c) the middle layer is thin d) the outer layer is composed largely of collagen fibers e) it is lined by a thin layer of endothelium

c

a decrease in venous return to the heart causes: a) a decrease in stroke volume and a decrease in cardiac output b) a decrease in stroke volume and an increase in cardiac output c) an increase in stroke volume and an increase in cardiac output d) an increase in stroke volume and a decrease in cardiac output e) no change in stroke volume and no change in cardiac output

a

which is the correct sequence going from the outermost to the innermost layer of a blood vessel wall: a) tunica media, tunica intima, tunica externa b) tunica media, tunica externa, tunica intima c) tunic externa, tunica media, tunica intima d) tunica externa, tunica intima, tunica media e) tunica intima, tunica media, tunica externa

c

the carotid artery is located in the a) axilla b) groin c) neck d) abdomen e) leg

c

the renal veins empty blood into the: a) kidneys b) common iliac vein c) inferior vena cava d) hepatic portal vein e) vertebral vein

c

the umbilical vein carries a) metabolic wastes and carbon dioxide from the fetus to the placenta b) metabolic wastes and carbon dioxide from the placenta to the fetus c) oxygen and foods from the fetus to the placenta d) oxygen and foods from the placenta to the fetus e)blood from the navel into the inferior vena cava

d

in which of the following blood vessels is the blood pressure the highest: a) veins b) capillaries c) vena cava d) arteries e) arterioles

d

peripheral resistance is increased by: a) dilation of a blood vessel b) atherosclerosis c) a decrease in blood viscosity d) an increase in blood pressure e) an increase in heart rate

b

vasoconstriction occurs as a result of: a) an increase in parasympathetic nervous system firing b) a decrease in parasympathetic nervous system firing c) an increase in sympathetic nervous system firing d) a decrease in sympathetic nervous system firing e) an increase in blood volume

c

which of the following is the function of renin and aldosterone: a) they are produced whenever blood pressure rises and ultimately cause an increase in blood volume and blood pressure b) they are produced whenever blood pressure rises and ultimately cause a decrease in blood volume and blood pressure c) they are produced when blood pressure rises and have no long-term effect on blood volume and blood pressure d) they are produced whenever blood pressure falls and ultimately cause an increase in blood volume and blood pressure e) they are produced whenever blood pressure falls and ultimately cause a decrease in blood volume an blood pressure

d

substances tend to leave the bloodstream at the arterial end of the capillary because a) the osmotic pressure of the blood is higher at the arterial end of the capillary b) the osmotic pressure of the blood is higher at the venous end of the capillary c) blood pressure is higher at the arterial end of the capillary d) blood pressure is higher at the venous end of the capillary e) interstitial pressure is higher at the arterial end of the capillary

c

varicose veins are caused by: a) a loss of elasticity in blood vessels b) the accumulation of fatty substances in blood vessels c) excessive production of the enzyme renin d) incompetent valves e) orthostatic hypotension

d

inflammation of the serous membrane surrounding the heart is _______.

pericarditis

the tiny white cords that anchor the cusps of the AV valves are called the ________

tendinae chordae

a decrease in the elasticity of blood vessels causes blood pressure to _________

increase

the blood vessel wall that consists of cells that fit closely together to form a silk surface that decreases friction and allows blood to flow smoothly through the vessel lumen is the ________.

tunic intima

the vessel that is a continuation of the external iliac artery is the _______

femoral artery

the vessel that drains blood from the lower parts of the body and empties it into the right atrium is the _______

inferior vena cava

the vessel that carries blood to the liver from the intestines is the _________.

hepatic portal vein

the vessel that is a continuation of the femoral vein is the _______

iliac vein

the flap-like opening in the interatrial septum of the fetus through which blood is shunted from the right atrium to the left atrium is the ______.

foramen ovale

the heart chamber with the thickest wall is the _______

left ventricle

(t/f) the heart is enclosed by a double sac of serous membrane known as the peritoneum

f

(t/f) the pulmonary arteries carry deoxygenated blood to the lungs

t

(t/f) the aorta is the largest artery within the pulmonary circulation

f

(t/f) arteries always carry blood away from the heart

t

(t/f) the part of the intrinsic conduction system of the heart that directly supplies the walls of the ventricles is the Purkinje fibers

t

(t/f) the pacemaker of the heart is called the sinoatrial (SA) node

t

(t/f) systole means contraction of heart muscle

t

(t/f) low venous return decreases stroke volume and cardiac output

t

(t/f) an increase in parasympathetic nervous system firing causes cardiac output to increase

f

(t/f) the smooth muscle in a blood vessel wall is found in the tunica media

t

(t/f) abnormal or unusual heart sounds are called angina

f

(t/f) the foramen ovale and the ductus venosus shunt blood away from the nonfunctional and collapsed fetal lungs

f

(t/f) an increase in blood vessel diameter causes blood pressure to decrease

t

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