The Cardiovascular System

Question 1

What are the 4 muscular chambers of the heart?

Answer 1

right/left atria; right/left ventricles

Question 2

The ____ receive blood returning to the heart from other areas of body.

Answer 2

atria

Question 3

The ____ collect and expel blood from the heart.

Answer 3

ventricles

Question 4

The atria and ventricles are separated by ____ valves: the ____ valve separates the right atrium and right ventricle and the ____ valve (also called the ____) separates the left atrium and left ventricle.

Answer 4

atrioventricular; tricuspid; mitral (or bicuspid)

Question 5

What are the 3 major types of blood vessels?

Answer 5

Arteries, veins, capillaries

Question 6

____ are strong, elastic vessels adapted to the high pressure of blood as it leaves the heart.

Answer 6

Arteries

Question 7

What is the largest artery in the body?

Answer 7

The aorta

Question 8

Blood returns to the heart from the capillaries via ____, which merge to form ____.

Answer 8

venules; veins

Question 9

What is the largest vein in the body called that brings deoxygenated blood back to the heart?

Answer 9

inferior vena cava

Question 10

? These bring blood from the lungs to the heart and are among the few veins that carry oxygenated blood.

Answer 10

pulmonary veins

Question 11

What are the 4 main components of human blood?

Answer 11

red blood cells, white blood cells, platelets, plasma

Question 12

What is the liquid component of blood that accounts for approximately half the blood volume and also contains proteins and electrolytes?

Answer 12

plasma

Question 13

____ account for the second greatest component of blood by volume; the functional unit is called hemoglobin.

Answer 13

Red blood cells, or erythrocytes

Question 14

The 2 pathways of the closed circulatory system are called what?

Answer 14

systemic & pulmonary circuit

Question 15

The ____ circuit contains the blood vessels that carry blood to and from the lungs. Deoxygenated blood flows from the ____ ventricle through the pulmonary arteries to the lungs, where the blood picks up oxygen. It then returns to the ____ atrium via the pulmonary vein.

Answer 15

pulmonary; right; left

Question 16

The ____ circuit carries oxygenated blood away from the ____ ventricle of the heart and returns deoxygenated blood to the ____ atrium. This circuit includes the aorta and blood vessels leading to the body tissues, as well as all the veins and venae cavae.

Answer 16

systemic; left; right

Question 17

The ____ circuit carries oxygenated blood away from the ____ ventricle of the heart and returns deoxygenated blood to the ____ atrium. This circuit includes the aorta and blood vessels leading to the body tissues, as well as all the veins and venae cavae.

Answer 17

systemic; left; right