Question

I meed help with 22 please thank you

In skeletal muscle, capillaries stop albumins from eutering the muscle ISF. What type of capillary is found in In the brain, capillaries allow very few molecules to pass freely fromi the blood into brain ISE, What type of In bone marrow, ne 22. skeletal muscle? inos capillary is found in the brain? i wall. What type of capillary is found in the splcen? Sn sd wly formed blood cells pass from the bone marrow into the blood through the capillary

Answer 1

22. ANS: The body has three primary types of capillaries: continuous capillaries, fenestrated capillaries, and discontinuous capillaries (sinusoids).

1. Continuous capillaries:

Structure: endothelial cells provide an uninterrupted lining

Function: allow only smaller molecules such as water and ions to pass through

Organs: skeletal muscles, goads, skin (numerous transport vesicles) central nervous system ( few vesicles)

2. Fenestrated capillaries

Structure: have pores in the endothelial cells. (60 to 80 nm) spanned by diaphragm

Function: allow only small molecules and limited amount of protein to diffuse

Location: renal glomerulus ( no diaphragm, instead podocytes foot process ), endocrine glands,intestines and pancreas

3. Sinusoidal capillaries

Structure: discontinuous capillaries, special type of open pore capillary, have larger openings ( 30 to 40 um) in the endothelium. Discontinuous basal lamina

Function : allow red and white blood cells and various serum proteins to pass

Location : liver ,spleen, bone marrow, lymph nodes and adrenal glands.

So the correct options are:

skeletal muscles: Continuous capillaries

Brain: Fenestrated capillaries

Spleen: Sinusoidal capillaries

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