Blood Vessels Flashcards

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1
Q

Structure of arteries

A
Thick smooth muscle layer
Elastic tissue layer
Thick wall
Smooth endothelium 
Narrow lumen
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2
Q

Purpose of thick muscle layer

A

Control/ maintenance of high blood pressure

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3
Q

Purpose of elastic tissue layer

A

Able to strech during ventricluar systole and recoil diastole
Reduces pressure surges in blood

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4
Q

Purpose of a thick wall

A

Withstand high pressure

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5
Q

Purpose of a narrow lumen

A

Maintain high blood pressure

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6
Q

Function of arterioles

A

Arteries- smaller vessels

With the job of directing blood and controling the vollume of blood into the capillaries

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7
Q

Structure of arterioles

A

Thicker smooth muscle layer- vaso contriction/ dislation

Thinner elastic layer (less pressure surges)

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8
Q

Structure of veins

A

Wider lumen- carry blood at lower pressure
Very little elastic/ musclular tissue
Values- to prevent back flow

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9
Q

What blood vessel vists the heart?

A

Veins

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10
Q

Structure of capillaries

A

Wall one cell thick- short diff path
Narrow lumen- slow max time difussion, bood cells pressed agsaint walls- short diff path
Large network- SA
Pores in walls- white blood cells big

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11
Q

Role of capillaries

A

Exchange of substances gasess nutrients glucose ect between blood tissue fluid and cells

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12
Q

Job of tissue fluid

A

Provide respiring cells with water ox glucose amino

Enables waste products CO2 lactic acid urea to move back into blood to then be removed out of body @ kidneys

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