Chapter 20

Question 1

Receives blood into the heart and sends blood throughout the body.

Answer 1

Chamber

Question 2

Protects the heart with its three layers of tissue.

Answer 2

heart wall

Question 3

Reduces friction between the pericardial membranes.

Answer 3

pericardium

Question 4

ensures that blood is pumped throughout the body in one direction

Answer 4

valve

Question 5

Controls the opening from the left ventricle into the aorta.

Answer 5

aortic valve

Question 6

Controls the opening from the right ventricle into pulmonary trunk.

Answer 6

pulmonary valve

Question 7

Has three cusps.

Answer 7

Right AV (tricuspid)

Question 8

Has two cusps.

Answer 8

Left AV (Bicuspid)

Question 9

A route of blood flow that carries blood between the heart and the lungs.

Answer 9

pulmonary circuit

Question 10

A route of blood flow between the heart and all body tissues, except the lungs.

Answer 10

systemic circuit

Question 11

Elevated blood pressure that is related to blood circulation to the lungs.

Answer 11

pulmonary hypertension

Question 12

The muscular- and elastic-walled tubes that carry blood from the heart through the body.

Answer 12

arteries

Question 13

The branching vessels that carry blood to the heart from the capillaries.

Answer 13

veins

Question 14

The membrane that surrounds the heart.

Answer 14

pericardium

Question 15

The right and left valves between the atria and ventricles of the heart.

Answer 15

atrioventricular (AV) valve

Question 16

One of two heart chambers that receive blood from veins.

Answer 16

atria

Question 17

A chamber of the heart that pumps blood into the arteries.

Answer 17

ventricle

Question 18

The heart valve located between the right atrium and the right ventricle.

Answer 18

tricuspid

Question 19

A valve flap of the heart, veins, and lymphatic vessels.

Answer 19

cusp

Question 20

A heart valve located between the left atrium and the left ventricle.

Answer 20

bicuspid