Blood Vessel Notes

Question 1

What is the tunica interna?

Answer 1

This layer is composed of Squamous endithilium. It is smooth to create low resistance to blood flow/prevent blood clots.

Question 2

What is the tunica media?

Answer 2

This layer is composed of smooth muscle. Regulates BP(constricts to increase, dilates to decrease).

Question 3

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Single layer of endothelium.

Answer 3

Tunica Interna

Question 3

What is the tunica externa?

Answer 3

This layer is composed of connective tissue. This protects the blood vessel and attaches it to surrounding tissue.

Question 4

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Bulky middle coat, contains smooth muscle.

Answer 4

Tunica Media

Question 5

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Provides a smooth surface to decrease resistance.

Answer 5

Tunica Interna

Question 6

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The only tunic of capillaries.

Answer 6

Tunica Interna

Question 7

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The tunic that plays an active role in BP regulation.

Answer 7

Tunica Media

Question 8

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Supportive/protective overcoat.

Answer 8

Tunica Externa