circulatory

Question 1

The circulatory system consists of four major components:

Answer 1

heart
arteries
veins
blood

Question 2

Circulatory system is also called as the

Answer 2

cardiovascular system

Question 3

It is responsible for

Answer 3

distributing nutrients to cells and tissues throughout the body

transporting waste products from the tissues to the organs of elimination

Question 4

_____ is a muscular pump that forces blood through a system of vessels made of _____, ______, and _______.

Answer 4

heart
arteries
veins
capillaries

Question 5

Hollow, 4 chambered muscular organ located in the middle area of the chest between the lungs known as ______

Answer 5

mediastinum

Question 6

It is enclosed in a loose fitting serous membrane known as the _________ or ________.

Answer 6

pericardial sac or pericardium.

Question 7

PERICARDIUM LAYERS

Answer 7

fibrous pericardium
serous pericardium

Question 8

prevents overdistention of the pumping heart by acting as a tough protective membrane surrounding the heart

Answer 8

fibrous pericardium

Question 9

thin and delicate; it is continuous with the outermost layer of the wall of the heart, epicardium.

Answer 9

serous pericardium

Question 10

Layers of the heart wall

Answer 10

epicardium
myocardium
endocardium

Question 11

Endocardium is innermost layer of the heart; it covers the valves of the heart and the ________ of the valves

Answer 11

chordae tendineae

Question 12

CHAMBERS OF THE HEART

Answer 12

atrium/atria
ventricles

Question 13

primer pumps; reservoir of blood

Answer 13

atrium/atria

Question 14

power pumps

Answer 14

ventricles

Question 15

pumps blood to lungs

Answer 15

right ventricle

Question 16

pumps blood to the system; large chambers

Answer 16

left ventricle

Question 17

GREAT VESSELS OF THE HEART

Answer 17

superior vena cava
inferior vena cava

Question 18

Brings blood from the upper parts of the body, head, neck, and arms.

Answer 18

superior vena cava / anterior vena cava

Question 19

Brings blood from the lower parts of the body, legs, and abdomen.

Answer 19

Inferior vena cava / posterior vena cava

Question 20

Prevents backflow of blood to the chambers

Answer 20

valves of the heart

Question 21

Prevents backflow of blood to the chambers (also called as ______)

Answer 21

heart valve regurgitation

Question 22

Valves ensure _____

Answer 22

one way flow of the blood

Question 23

Atrioventricular valves

Answer 23

Tricuspid valve

Bicuspid or mitral valve

Question 24

valve between the right atrium and the right ventricle

Answer 24

Tricuspid valve

Question 25

valve between left atrium and left ventricle

Answer 25

Bicuspid or mitral valve

Question 26

Semilunar valves

Answer 26

Pulmonary semilunar valve Aortic semilunar valve

Question 27

opening where the pulmonary trunk exits the right ventricle

Answer 27

Pulmonary semilunar valve

Question 28

opening where the aorta leaves the left ventricle

Answer 28

Aortic semilunar valve

Question 29

Divides arteries into smaller branches

Answer 29

arterioles

Question 30

Divides arterioles to smaller vessels

Answer 30

Capillaries

Question 31

Divides the veins into smaller vessels

Answer 31

Venules

Question 32

the sequence of events occurring during each beat of the heart

Answer 32

cardiac cycle