Structure of Blood Vessels Flashcards

1
Q

What are the largest blood vessels in the body? What is their purpose? What are their 3 layers?

A

Aorta and elastic arteries; Conduits for blood flow to smaller arterial branches;

  1. Tunica intima
  2. Tunica media
  3. Tunica adventitia - Contains vessels that give rise to the vaso vasorum
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2
Q

What is unique about the tunica media of large muscular arteries?

A

Consists of layers of smooth muscle without bands of elastin. The lack of elastin allows for more efficient contraction.

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3
Q

What is the job of the smaller muscular arteries?

A

The are important regulators of blood flow

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4
Q

What is a key feature of capillaries?

A

They allow for the exchange of solutes and cells between blood and extracellular fluid.

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5
Q

What is the job of the venules? What immune function occurs in the venules?

A

They are the first vessels to collect blood from the capillaries

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6
Q

What is the job of the lymphatics?

A

To drain interstitial fluid

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