Cardiovascular System

Question 1

Arteries

Answer 1

Vessels that carry blood away from the heart.

Question 2

Blood Vessels

Answer 2

Channels that carry blood throughout your body.

Question 3

Capillaries

Answer 3

Tiny vessels that branch off from arteries to deliver blood to all body tissues. (exchange site between blood and tissues)

Question 4

Deoxygenated Blood (pulmonary)

Answer 4

Venous blood; Has less oxygen than oxygenated blood. Its color is dark red. It travels through the venous system and pulmonary artery.
body –> right chambers of the heart –> lung

Question 5

Heart

Answer 5

A muscular pump that forces blood around the body.

Question 6

Oxygen

Answer 6

The life supporting component of the air.

Question 7

Oxygenated Blood (systemic)

Answer 7

Arterial blood; After the respiration in the lung, blood has plenty of oxygen, and its color is bright red. Oxygenated blood flows in the pulmonary vein and in the arteries;
lung –> left chambers of the heart –> body

Question 8

Pulmonary Circulation

Answer 8

Between the heart and lungs, transports deoxygenated blood to the lungs to get oxygen, and then back to the heart.

Question 9

Systemic Circulation

Answer 9

Carries oxygenated blood away from the heart to the tissues and cells, and then back to the heart.

Question 10

Veins

Answer 10

Carries blood towards the heart.

Question 11

Size of Heart

Answer 11

About the size of a fist

Question 12

How many chambers does the heart have?

Answer 12

4 chambers

Question 13

Location of heart

Answer 13

Located in the mediastinum in the left-center of the chest cavity

Question 14

Apex

Answer 14

The tip of the heart at the lower edge

Question 15

How many chambers does the heart have?

Answer 15

4 chambers
2 atria; upper chambers
2 ventricles; lower chambers

Question 16

Myocardium

Answer 16

Thick, muscular middle layer of the heart;

contraction of this muscle layer develops the pressure required to pump blood through the blood vessels

Question 17

Pericardium

Answer 17

Double-layered pleural sac that encloses the heart

Question 18

Atria

Answer 18

The receiving chambers of the heart; blood returning to the heart via veins firsts collects in the atria

Question 19

Ventricles

Answer 19

The pumping chambers; they have a much thicker myocardium and their contraction ejects blood out of the heart and into the great arteries

Question 20

Tricuspid Valve

Answer 20

An atrioventricular valve (AV); it controls the opening between the right atrium and the right ventricle. Once the blood enters the right ventricle, it cannot go back up into the atrium again. This valve has three (tri) leaflets or cusps.

Question 21

Pulmonary Valve

Answer 21

A semilunar valve; looks like a half-moon. Located between the right ventricle and the pulmonary artery, this valve prevents blood that has been ejected into the pulmonary artery from returning to the right ventricle as it relaxes.

Question 22

Mitral Valve

Answer 22

Also called the bicuspid valve, has two cusps. Blood flows through this atrioventricular valve to the left ventricle and cannot go back up into the left atrium.

Question 23

Aortic Valve

Answer 23

A semilunar valve located between the left ventricle and the aorta. Blood leaves the left ventricle through this valve and cannot return to the left ventricle.

Question 24

Blood Pressure

Answer 24

A measurement of the force exerted by blood against the wall of a blood vessel.

Question 25

Pulse

Answer 25

The surge of blood caused by the heart contracting. (felt at the wrist or neck)