Cardiovascular System

Question 1

Arteries

Answer 1

any of the muscular-walled tubes forming part of the circulation system by which blood (mainly that which has been oxygenated) is conveyed from the heart to all parts of the body.

Question 2

Blood Vessels

Answer 2

a tubular structure carrying blood through the tissues and organs; a vein, artery, or capillary.

Question 3

Capillaries

Answer 3

any of the fine branching blood vessels that form a network between the arterioles and venules.

Question 4

Deoxygenation

Answer 4

Deoxygenation is a chemical reaction involving the removal of oxygen atoms from a molecule

Question 5

Heart

Answer 5

a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation. In vertebrates there may be up to four chambers (as in humans), with two atria and two ventricles.

Question 6

oxygen

Answer 6

a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.

Question 7

Oxygenated

Answer 7

supplied, treated, or enriched with oxygen.

Question 8

Pulmonary circulations

Answer 8

s the passage of blood from the right side of the heart through arteries to the lungs

Question 9

Systemic circulation

Answer 9

The systemic circulation provides the functional blood supply to all body tissue.

Question 10

Veins

Answer 10

any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart.

Question 11

size of the heart

Answer 11

The heart is often described as the size of a fist

Question 12

How many chambers does a heart have?

Answer 12

2 upper and 2 lower

Question 13

Where is the heart located

Answer 13

front and middle of your chest, behind and slightly to the left of your breastbone

Question 14

apex

Answer 14

the top or highest part of something, especially one forming a point.

Question 15

endocardium

Answer 15

the thin, smooth membrane which lines the inside of the chambers of the heart and forms the surface of the valves.

Question 16

myocardium

Answer 16

the muscular tissue of the heart.

Question 17

pericardium

Answer 17

the membrane enclosing the heart, consisting of an outer fibrous layer and an inner double layer of serous membrane.

Question 18

atria

Answer 18

each of the two upper cavities of the heart from which blood is passed to the ventricles. The right atrium receives deoxygenated blood from the veins of the body; the left atrium receives oxygenated blood from the pulmonary vein.

Question 19

ventricle

Answer 19

a hollow part or cavity in an organ.

Question 20

Tricuspid valve

Answer 20

The tricuspid valve sits between the heart’s two right chambers. The tricuspid valve consists of three thin flaps of tissue (called cusps, or leaflets). These valve flaps open to let blood flow from the upper right chamber (right atrium) to the lower right chamber (right ventricle).

Question 21

Pulmonary valve

Answer 21

one of four valves that regulate blood flow in the heart.

Question 22

mitral valve

Answer 22

the valve between the left atrium and the left ventricle of the heart, consisting of two tapered cusps.

Question 23

aortic valve

Answer 23

One of the four valves in the heart, this valve is situated at exit of the left ventricle of the heart where the aorta (the largest of all arteries) begins.