CAPILLARIES, VEINS, & ARTERIES #1

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Last updated 2:06 AM on 4/29/26
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20 Terms

1
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What are the three tunics?

Tunica intima, media, externa

2
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Tunica intima made of?

Endothelium (simple squamous)

3
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Tunica media function?

Controls vasoconstriction & vasodilation

4
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Which tunic is largest in arteries?

Tunica media

5
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Which tunic is largest in veins?

Tunica externa

6
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Arteries vs veins shape?

Arteries = round, veins = flattened

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Which has thicker walls?

Arteries

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Which have valves?

Veins

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Function of valves?

Prevent backflow

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Elastic arteries function?

Maintain pressure

11
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Muscular arteries function?

Control blood distribution

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Arterioles?

Smallest arteries (control flow)

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Capillary function?

Exchange of nutrients, gases, wastes

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What are capillaries made of?

Endothelium + basement membrane

15
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Which capillaries have large gaps?

Sinusoidal

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Laminar flow?

Smooth flow

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Turbulent flow?

Chaotic flow

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Effect of vasoconstriction?

↑ resistance, ↓ flow

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Musculovenous pump?

Muscles push blood to heart

20
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What is Vasculitis?

Inflammation of blood vessels