Control of circulation Flashcards

1
Q

What are the ‘resistance vessels’?

Why?

A

Arterioles

Large amounts of vascular smooth muscle

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2
Q

What are the ‘capacitance’ vessels?

Why?

A

Veins

Lots of blood is stored here

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3
Q

Where is the MAIN place where circulation is controlled?

How?

A

In the ARTERIOLES:

  • Can constrict/relax smooth muscle
  • Vary diameter
  • Vary resistance
  • Change blood pressure
  • Change flow through tissues
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4
Q

What can the diameter of arterioles be regulated by?

A
  • CNS control

- Local control (local factors)

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5
Q

What are the various types of blood vessels?

A
  • LARGE arteries/veins
  • MEDIUM arteries/veins
  • Arterioles/Venules
  • Capillaries
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6
Q

What different properties do different vessels have?

A
  • Different amounts of smooth muscle

- Different amounts of elastin

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