Cardiovascular quiz

Question 1

Which of the following best describes the production of heart sounds?
- blood moving into the aorta during ventricular systole

-the closing of heart valves

-atrial systole followed by ventricular systole
- the “snapping” of chordae tendineae

Answer 1

The closing of heart valves

Question 2

Which of the following is most related to the production of the P wave?

-acetylcholine moving from the right to left atria

-contraction of the pericardium

-sympathetic nerve signals moving from the heart to the adrenal gland

-firing of the AV node

-firing of the SA node

Answer 2

Firing of the SA node

Question 3

What mechanical event follows qrs complex of ecg?
systole of atria

diastole of atria

systole of ventricles

diastole of ventricles

Answer 3

Systole of ventricles

Question 4

Which of the following best describes atherosclerosis?

-loss of blood supply in areas such as the myocardium or the brain
-formation of plaque under the endothelial layer of blood vessels that cause an occlusion in the lumen
-anything that will produce hypoxia and eventually produce anoxia
-stroke or heart attack (myocardial infarction)
- hardening of the arteries caused by increased connective tissues in the tunica externa

Answer 4

formation of plaque under the endothelial layer of blood vessels that cause an occlusion in the lumen

Question 5

Which of the following best describes cardiac output?

• volume of blood in the atria just prior to contraction
• total quantity of blood that can fit into the heart at any one time

-volume of blood in the ventricles after contraction

-volume of blood pumped by the left ventricle in one beat

Answer 5

Volume of blood pumped by the left ventricle in one beat?

Question 6

Which of the following comes in direct contact with the blood?

myocardium

epicardium

endocardium

pericardium

Answer 6

Endocardium

Question 7

The majority of ventricular filling occurs due to ___.

depolarization of the atria

repolarization of the atria

depolarization of the ventricles

repolarization of the ventricles

Answer 7

depolarization of the atria

Question 8

Where in the body is the extrinsic cardioregulatory center?

Answer 8

Brain stem /medulla

Question 9

The semilunar valves are closed and the AV valves are open during ___.

ventricular systole

sympathetic stimulation of the heart

ventricular diastole

parasympathetic stimulation of the heart

the ventricular respiratory phase

Answer 9

Ventricular diastole

Question 10

How many of the following are correctly identified?

Color of blood in the pulmonary artery: bright red (high in oxygen)

Color of blood in the aorta: bright red (high in oxygen)

Color of blood in the right atria: dark purple (low in oxygen)

Color of blood in the left ventricle: bright red (high in oxygen)

Answer 10

3

Question 11

the mitral valve at point c is closed

the aortic SL valve at point f is open

the pressure of the atria is greater than the ventricle at point e

both aortic SL and mitral valve are open at point c

both aortic SL and mitral valve are closed at point b
Responses

Answer 11

2