1. What is the correct order of blood flow? R = right, L = left, A = atrium, V =

Question

1. What is the correct order of blood flow? R = right, L = left, A = atrium, V = ventricle, P = lungs (pulmonary), S = body (systemic)

a. RA, RV, P, LA, LV, S

b. P, RA, RV, S, LA, LV

c. RV, RA, P, LV, LA, S

d. LA, LV, P, RA, RV, S

2. Which of the following is NOT a correct match of anatomical area and description.

a. right atrium: receives deoxygenated blood from body

b. left atrium: receives oxygenated blood from the lungs

c. left ventricle: pumps out deoxygenated blood through aorta all of the answers are correct

d. right ventricle: pumps out deoxygenated blood through pulmonary trunk

3. Match the correct heart valve with its function or description.

a. aortic: closes when LV is filling

b. bicuspid: between LA and LV

c. tricuspid: uses papillary muscles and chordae tendineae

d. all of the answers are correct

e. pulmonary: opens when RV contracts

4. Why do the heart valves open or close when they do?

a. the valve before that chamber opens when that chamber is contracting/ejecting

b. the valve before that chamber closes when that chamber is filling

c. the valve after that chamber opens when that chamber is contracting/ejecting

d. the valve after that chamber opens when that chamber is filling

Explanation / Answer

Question 1

Answer is A (RA, RV, P, LA, LV, S)

The impure blood from body reaches the heart through superior and inferior vena cava into the right atrium and it enters into right ventricle during contraction through the tricuspid valve. from the right ventricle, the blood moves into the pulmonary artery to reach lungs where it is purified. The purified blood enters the left atrium through pulmonary veins and enters the left ventricle during contraction and blood pumped to the body through the aorta.

Question 2

Answer C

Option C is the not correct match.

left ventricle: pumps out deoxygenated blood through the aorta - wrong

left ventricle: pumps out oxygenated blood through the aorta - right

Question 3

Answer D (all of the answers are correct )

Aortic valve - closes when LV is filling

Bicuspid valve - between LA and LV

Tricuspid valve - uses papillary muscles and chordae tendineae

Pulmonary valve - opens when RV contracts

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