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circulatory system > circulatory > Flashcards

circulatory Flashcards

1
Q

The circulatory system consists of four major components:

A

heart
arteries
veins
blood

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2
Q

Circulatory system is also called as the

A

cardiovascular system

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3
Q

It is responsible for

A

distributing nutrients to cells and tissues throughout the body

transporting waste products from the tissues to the organs of elimination

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4
Q

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

A

heart
arteries
veins
capillaries

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5
Q

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

A

mediastinum

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6
Q

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

A

pericardial sac or pericardium.

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7
Q

PERICARDIUM LAYERS

A

fibrous pericardium
serous pericardium

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8
Q

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

A

fibrous pericardium

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9
Q

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

A

serous pericardium

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10
Q

Layers of the heart wall

A

epicardium
myocardium
endocardium

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11
Q

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

A

chordae tendineae

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12
Q

CHAMBERS OF THE HEART

A

atrium/atria
ventricles

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13
Q

primer pumps; reservoir of blood

A

atrium/atria

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14
Q

power pumps

A

ventricles

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15
Q

pumps blood to lungs

A

right ventricle

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16
Q

pumps blood to the system; large chambers

A

left ventricle

17
Q

GREAT VESSELS OF THE HEART

A

superior vena cava
inferior vena cava

18
Q

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

A

superior vena cava / anterior vena cava

19
Q

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

A

Inferior vena cava / posterior vena cava

20
Q

Prevents backflow of blood to the chambers

A

valves of the heart

21
Q

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

A

heart valve regurgitation

22
Q

Valves ensure _____

A

one way flow of the blood

23
Q

Atrioventricular valves

A

Tricuspid valve

Bicuspid or mitral valve

24
Q

valve between the right atrium and the right ventricle

A

Tricuspid valve

25
Q

valve between left atrium and left ventricle

A

Bicuspid or mitral valve

26
Q

Semilunar valves

A

Pulmonary semilunar valve

Aortic semilunar valve

27
Q

opening where the pulmonary trunk exits the right ventricle

A

Pulmonary semilunar valve

28
Q

opening where the aorta leaves the left ventricle

A

Aortic semilunar valve

29
Q

Divides arteries into smaller branches

A

arterioles

30
Q

Divides arterioles to smaller vessels

A

Capillaries

31
Q

Divides the veins into smaller vessels

A

Venules

32
Q

the sequence of events occurring during each beat of the heart

A

cardiac cycle

circulatory system (1 decks)

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