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Helena Harrison > cardiovascular system > Flashcards

cardiovascular system Flashcards

1
Q

arteries

A

Vessels that carry blood away from the heart

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2
Q

blood vessels

A

A tube through which the blood circulates in the body.

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3
Q

capillaries

A

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

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4
Q

deoxygenated

A

body → right chambers of the heart → lung

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5
Q

oxygenated

A

lung → left chambers of the heart → body

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6
Q

oxygen

A

The odorless gas that is present in the air and necessary to maintain life

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7
Q

heart

A

receiving deoxygenated blood, recycling it through the lungs, and supplying oxygenated blood to the body

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8
Q

pulmonary circulation

A

between the heart and lungs, transports deoxygenated blood to the lungs to get oxygen, and then back to the heart

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9
Q

systemic circulation

A

carries oxygenated blood away from the heart to the tissues and cells, and then back to the heart

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10
Q

veins

A

Vessels that bring blood back to the heart

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11
Q

size of heart

A

size of a fist and shaped like an upside-down pear

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12
Q

How many heart chambers

A

4

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13
Q

location of heart

A

mediastinum in the left leaning center of the chest cavity

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14
Q

apex

A

tip of the heart at the lower edge

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15
Q

endocarium

A

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.

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16
Q

myocardium

A

thick, muscular middle layer of the heart. Contraction of this muscle layer develops the pressure required to pump blood through the blood vessels.

17
Q

pericardium

A

Fluid between the two layers of the sac reduces friction as the heart beat

18
Q

atria

A

receiving chambers of the heart. Blood returning to the heart via veins first collects in the atria.

19
Q

ventricles

A

eject

20
Q

tricuspid valve

A

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

21
Q

pulmonary valve

A

prevents blood that has been ejected into the pulmonary artery from returning to the right ventricle as it relaxes

22
Q

mitral valve

A

Blood flows through this atrioventricular valve to the left ventricle and cannot go back up into the left atrium.

23
Q

aortic valve

A

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

Helena Harrison (9 decks)

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