cardiovascular system

Question 1

arteries

Answer 1

Vessels that carry blood away from the heart.

Question 2

Blood vessels

Answer 2

There are three kinds of blood vessels: arteries, veins, and capillaries.

Question 3

Capillaries

Answer 3

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

Question 4

Deoxygenated

Answer 4

body-right chambers of the heart-lung

It travels through the venous system and pulmonary artery.

Question 5

Heart

Answer 5

A muscular pump that forces blood around the body.

Question 6

oxygen

Answer 6

Diffuses from the alveoli into the capillaries, which carry it out of the lungs and to the rest of the body

Question 7

Oxygenated

Answer 7

lung-left chambers of the heart-body

Oxygenated blood flows in the pulmonary vein and in the arteries.

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

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 the heart

Answer 11

The hearth must extend at least 300mm to the front and 150mm to either side. It must be at least 12mm thick.

Question 12

How many chambers does the heart have?

Answer 12

Four

Question 13

Location of heart

Answer 13

located in the mediastinum in the center of the chest cavity

Question 14

Apex

Answer 14

Is the tip of the heart at the lower edge

Question 15

Endocardium

Answer 15

is 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

is 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

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

Question 18

Atria

Answer 18

Are the receiving chambers of the heart.

Question 19

Ventricles

Answer 19

Are 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

Meaning that it controls the opening between the right atrium and the right ventricle.

Question 21

Pulmonary valve

Answer 21

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

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

Blood leaves the left ventricle through this valve and cannot return to the left ventricle.

Question 24

Blood pressure

Answer 24

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

Question 25

Pulse

Answer 25

Felt at the wrist or throat is the surge of blood cause by the heart contraction.