ATI TEAS Science: Cardiovascular System

Question 1

Core of cardiovascular system

Answer 1

Heart

Question 2

Where is the heart located?

Answer 2

In between the lungs

Question 3

The heart has how many chambers?

Answer 3

4 (2 atria, 2 ventricles)

Question 4

Atriums

Answer 4

• A heart chamber that receives blood
• upper chamber

Question 5

Ventricles

Answer 5

• powerhouse
• lower chamber
• pump blood to the lungs

Question 6

Valves

Answer 6

• prevent back flow of blood

Question 7

How many types of valves?

Answer 7

4

Question 8

Tricuspid valve

Answer 8

-door between right atrium and right ventricle
- has 3 flaps
- prevents back flow into the right atrium

Question 9

Pulmonary valve

Answer 9

• prevents flow of blood into right ventricle
• leads blood to the lungs

Question 10

Mitral/Bicuspid valve

Answer 10

• door between left atrium and left ventricle
• 2 flaps
• prevents back flow into the left atrium

Question 11

Aortic valve

Answer 11

• left ventricle pumps blood to the aorta
• between the left ventricle and aorta

Question 12

How many layers of the heart?

Answer 12

3

Question 13

Epicardium

Answer 13

outer layer

Question 14

Myocardium

Answer 14

middle layer

Question 15

Endocardium

Answer 15

inner layer

Question 16

STEP 1 (blood flow)

Answer 16

Blood enters through superior and inferior vena cava

Question 17

STEP 2 (blood flow)

Answer 17

blood in the right atrium flows through the right ventricle (passes through tricuspid valve)

Question 18

STEP 3 (blood flow)

Answer 18

blood pumps through pulmonary valve into the pulmonary artery which carries it to the lungs

Question 19

STEP 4 (blood flow)

Answer 19

Blood is oxygenated in the lungs

Question 20

STEP 5 (blood flow)

Answer 20

Blood moves through the pulmonary veins into the left atrium returning to the heart

Question 21

STEP 6 (blood flow)

Answer 21

Blood flows from left atrium to the left ventricle (passes through mitral/bicuspid valve)

Question 22

STEP 7 (blood flow)

Answer 22

Pumps oxygen-rich blood through the aortic valve into the aorta (main artery), moving blood out to the body