Capillaries

Question 1

Capillaries are the smallest and most _______ of blood vessels.

Answer 1

numerous

Question 2

Capillaries form the connection between the vessels that carry blood ____ from the heart (arteries) and the vessels that ____ blood to the heart (veins).

Answer 2

away, return

Question 3

The primary function ofcapillariesis the _______ of materials between the blood and tissue cells.

Answer 3

exchange

Question 4

Capillaries are fine-branching blood vessels that form a ______ between the arterioles and venules.

Answer 4

network

Question 5

Capillaries are very tiny blood vessels — so small that a single ____ _____ cell can barely fit through them.

Answer 5

red blood

Question 6

A capillary is a small blood vessel from ___ to ____ micrometres (μm) in diameter, and having a wall one endothelial cell thick.

Answer 6

5, 10

Capillaries are normally around 3-4µm, but some capillaries can be 30-40 µm in diameter.

Question 7

Capillaries connect _______ to venules.

Answer 7

arterioles

Question 8

The walls of capillaries consist of nothing but ______ cells (and a basal lamina with pericytes.)

Answer 8

endothelial

Question 9

They allow the exchange of nutrients and wastes between the blood and the _____ cells (and the interstitital fluid).

Answer 9

tissue

Question 10

The largest capillaries are found in the ____.

Answer 10

liver

Question 11

Capillar comes from the greek for _____.

Answer 11

hairlike

Question 12

There are three types of capillaries:
1.
2.
3.

Answer 12

1. Continuous
2. Fenestrated
3. Sinusoids