Blood Flow in the Heart

What is the first step in the blood flow through the heart?

• A) Blood enters right atrium from superior and inferior vena cavae.

• B) Blood flows through right AV valve into right ventricle.

• C) Blood is distributed by pulmonary arteries to the lungs.

• D) Blood returns from lungs to left atrium.

In which chamber does blood flow after passing through the right AV valve (tricuspid)?

• Left atrium

• Right ventricle

• Left ventricle

• Aorta

The contraction of which ventricle forces the pulmonary semilunar valve open?

• Left ventricle

• Right ventricle

• Right atrium

• Left atrium

Blood is distributed by right and left pulmonary arteries to the lungs, where it unloads ___ and loads Oxygen.

• CO2

• Nitrogen

• Oxygen

• Hydrogen

Tags

NGSS.HS-LS2-3

After blood returns from the lungs, it flows into which chamber of the heart?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle

Blood in the left atrium flows through the left AV valve (mitral) into the ___.

• Right ventricle

• Left ventricle

• Aorta

• Right atrium

Which valve is forced open by the contraction of the left ventricle?

• Tricuspid valve

• Pulmonary semilunar valve

• Aortic semilunar valve

• Mitral valve

Blood flows through the aortic valve into the ___.

• Pulmonary trunk

• Right atrium

• Ascending aorta

• Left ventricle

Trace the flow of blood in order

e

f

g

h

d

c

b

a

1

5

2

8

3

6

7

4

Tags

NGSS.MS-LS1-3