Which layer of the g. l. tract is directly responsible for nutrient absorption?
a. mucosa
b. submucosa
c. serosa
d. muscularis externa
e. adventitia

a). mucosa.

Explanation:

Mucosa is the innermost layer of gastrointestinal tract (GI tract) that release various hormones and digestive enzyme. The mucosa layer is responsible for the absorption of nutrients in small intestine.

This layer contains finger-like projections (known as villi) that increase the surface area of cell membrane. It allows increased intestinal surface area to absorb nutrition. These villi are joined with blood vessels, which transport absorbed nutrients to the circulating blood.  

Thus, the correct answer is option (a).

answer: you can’t talk to other companies about what’s going on in your union, but you can contribute ideas that would make you stand out in the union and market.

explanation:

answer:

there is no cure for hiv, although antiretroviral treatment can control the virus, meaning that people with hiv can live long and healthy lives. most research is looking for a functional cure where hiv is reduced to undetectable and harmless levels in the body permanently, but some residual virus may remain. most commonly hiv-antivirals are taken also known as nucleoside/nucleotide reverse transcriptase inhibitors (nrti's).