Self Check 1

Question 1

2.​Which of these vessels has the thinnest walls?
​A)​arteries
​B)​capillaries
​C)​veins
​D)​venules

Answer 1

B

Question 2

3. Which of these vessels has valves?
​A)​arteries
​B)​arterioles
​C)​capillaries
​D)​veins

Answer 2

D

Question 3

4. What is the function of the heart valves?
​A)​to give support to the heart
​B)​to prevent backflow
​C)​to pump blood
​D)​to stimulate the heart

Answer 3

B

Question 4

5. Which of the following statements is correct?
   ​A)​the greater the number of arterioles dilated the higher the blood ​pressure
   ​B)​the greater the number of arterioles dilated the lower the blood ​pressure
   ​C)​valves are found in arteries that carry blood against the force of ​gravity
   ​D)​venules allow for gas exchange

Answer 4

B

Question 5

6.​Which of these chambers has the thickest walls?
​A)​left atrium
​B)​left ventricle
​C)​right atrium
​D)​right ventricle

Answer 5

B

Question 6

7.​Which chamber of the heart receives blood from the pulmonary veins?
​A)​left atrium
​B)​left ventricle
​C)​right atrium
​D)​right ventricle

Answer 6

A

Question 7

8.​The vena cavae carry blood into which chamber of the heart?
​A)​left atrium
​B)​left ventricle
​C)​right atrium
​D)​right ventricle

Answer 7

C

Question 8

9.​Where do the coronary arteries carry blood from and deliver it to?
​A)​from the aorta to the tissues of the heart
​B)​from the heart to the lungs
​C)​from the lungs to the tissues of the heart
​D)​from the pulmonary circuit to the heart

Answer 8

A

Question 9

10.​What causes the heart sounds?
​A)​blood flow
​B)​blood pressure in the aorta
​C)​closing of the valves
​D)​contraction of the heart muscle

Answer 9

C

Question 10

11.​What does the term systole refer to?
​A)​the contraction of the aorta
​B)​the contraction of the atria and ventricles
​C)​the relaxation of the aorta
​D)​the relaxation of the atria and ventricles

Answer 10

B

Question 11

12.​Which statement is true of the SA node?
​A)​it initiates the heartbeat
​B)​it is located in the left atrium
​C)​it is a unique type of cardiac valve
​D)​it works only when it receives a nerve impulse

Answer 11

A

Question 12

13.​Which statement is true of blood pressure?
​A)​it is higher in veins than in the capillaries
​B)​it is highest in the aorta
​C)​it is the same in all blood vessels
​D)​it increases with distance from the heart

Answer 12

B

Question 13

14.​What is the major circulatory pathway of the cardiovascular system?
​A)​the coronary circuit
​B)​the hepatic portal system
​C)​the pulmonary circuit
​D)​the systemic circuit

Answer 13

D

Question 14

15.​Where does the path begin for systemic blood flow to any organ in the body?
​A)​left atrium
​B)​left ventricle
​C)​right atrium
​D)​right ventricle

Answer 14

B

Question 15

16.​What part of the body do the coronary arteries serve?
​A)​the brain
​B)​the head
​C)​the heart
​D)​the lungs

Answer 15

C

Question 16

17. What organ is the hepatic portal system associated with?
​A)​the brain
​B)​the heart
​C)​the liver
​D)​the lung

Answer 16

C

Question 17

1. What is the function of arteries?
​A)​to allow for the exchange of oxygen and carbon dioxide gases
​B)​to carry  blood to the heart
​C)​to carry blood away from the heart
​D)​to carry deoxygenated blood

Answer 17

C