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. They form a closed loop, like a circuit, that begins and ends at your heart

Question 3

Capillaries

Answer 3

Tiny vessels that branch off from arteries to deliver blood to all body tissues

Question 4

Deoxygenated

Answer 4

Known as venous blood has less oxygen than oxygenated blood. Its color is dark red.

Question 5

Heart

Answer 5

Pumps blood through blood vessels

Question 6

Oxygen

Answer 6

Element needed to survive

Question 7

Oxygenated

Answer 7

Also called arterial blood. After the respiration in the lung, the blood has plenty of oxygen, and its color is bright red.
Oxygenated blood flows in the pulmonary vein and in the arteries

Question 8

Pulmonary Circulation

Answer 8

Between 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

Vessels that bring blood back to the heart

Question 11

Size of heart

Answer 11

At about the size of a fist and shaped like an upside-down pear, the heart lies directly behind the sternum.

Question 12

of heart chambers

Answer 12

Four chambers

Question 13

Location of heart

Answer 13

The heart is located in the mediastinum in the center of the chest cavity; however, it is not exactly centered; more of the heart is on the left side of the mediastinum than the right

Question 14

Apex

Answer 14

The tip of the heart at the lower edge

Question 15

Endocardium

Answer 15

The inner layer of the heart lining the heart chambers. It is a very smooth, thin layer that serves to reduce friction as the blood passes through the heart chambers

Question 16

Myocardium

Answer 16

The 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

The epicardium is the outer layer of the heart. The heart is enclosed within a double-layered pleural sac, called the pericardium

Question 18

Atria

Answer 18

The receiving chambers of the heart. Blood returning to the heart via veins first 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), meaning that 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. 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, indicating that it 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

Measurement of the force exerted by blood against the wall of a blood vessel

Question 25

Pulse

Answer 25

The pulse felt at the wrist or throat is the surge of blood caused by the heart contraction