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BIO173 > Chapter 21- Blood Vessels > Flashcards

Chapter 21- Blood Vessels Flashcards

1
Q

arteries

A

carry blood away from the heart

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2
Q

arterioles

A

smaller arteries that branch into capillaries

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3
Q

capillaries

A

allow the exchange of substances through microcirculation

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4
Q

microcirculation

A

the flow of blood from arterioles to venules through capillaries

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5
Q

venules

A

small veins, groups of capillaries form together to create venules

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6
Q

veins

A

blood vessel that conveys blood back to the heart through valves

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7
Q

tunic interna

A

endothelium

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8
Q

tunic media

A

elastic fiber & muscle layer

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9
Q

tunic externa

A

elastic & collagen fiber

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10
Q

what makes veins different from arteries?

A

have a thinner tunic media & valves to push blood back to the heart

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11
Q

vascular sinus

A

a vein with a thin endothelial wall and a dense connective tissue cover

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12
Q

elastic arteries

A

large arteries (aorta, carotid, subclavian)

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13
Q

muscular arteries

A

medium arteries (brachial, mesenteric, popliteal)

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14
Q

2 veins that come together to form the hepatic portal vein

A

splenic & superior mesenteric

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15
Q

importance of hepatic portal vein

A

detoxify harmful substances, form glycogen, store some nutrient molecules

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16
Q

foramen ovale links what chambers during fetal development

A

R & L atrium

17
Q

ductus ateriosus links what during fetal development

A

pulmonary trunk & aorta, develops into a ligament later on

18
Q

ductus venosus

A

blood from umbilical veins drains here before entering inferior vena cava

19
Q

average amount of blood in L for male adults

A

5-6 L

20
Q

average amount of blood in L for female adults

A

4-5 L

21
Q

where is most blood at in the body at one particular moment

A

systemic veins/venules

22
Q

what % of blood is in systemic arteries/arterioles

A

13%

23
Q

what % of blood is in pulmonary vessels

A

9%

BIO173 (12 decks)

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