Histology of CVS: Capillaries

Question 1

What is the only layer present in capillaries?

Answer 1

TUnica intima

Question 2

What branches from the arteriole?

Answer 2

Metarteriole

Question 3

What branches from the metarterioles?

Answer 3

Capillaries

Question 4

What is the section directly connected to both the metarteriole and capillaries?

Answer 4

Precapillary sphincter

Question 5

Where does blood go following the capillary plexus?

Answer 5

Venule

Question 6

How is blood flow through capillaries controlled?

Answer 6

Metarterioles
Precapillary sphincters
Arterio-venous shunts

Question 7

Why are the walls of capillaries so thin?

Answer 7

Gas exchange

Question 8

What is a pericyte?

Answer 8

Structure that aids in capillary contraction

Question 9

What are the 3 types of capillaries?

Answer 9

Continuous endothelium
Fenestrated capillaries
Discontinuous endothelium

Question 10

What type of capillary is the most common?

Answer 10

Continuous

Question 11

What defines the continuous capillaries?

Answer 11

Complete lining of endothelial cells

Question 12

What are fenestrations?

Answer 12

Pores in capillaries

Question 13

Is the basement membrane in fenestrated capillaries complete?

Answer 13

Yes

Question 14

Where are fenestrated capillaries found?

Answer 14

SI mucosa
Endocrine glands
Renal glomeruli

Question 15

Where are sinusoids found?

Answer 15

Liver, spleen, bone marrow