Author Question: HIV is most often spread through which route? A) sexual transmission B) sharing infected needles ... (Read 63 times)

craiczarry · **on:** Aug 21, 2018

HIV is most often spread through which route?
A) sexual transmission
B) sharing infected needles
C) transmission from infected mother to child
D) unsafe food handling practices

Question 2

Outline the enteropancreatic circulation of zinc from absorption to utilization and excretion.

cadimas · **Reply #1 on:** Aug 21, 2018

Answer to Question 1

A

Answer to Question 2

Zinc is absorbed in the intestines and can be retained in the intestinal cells by metallothionein. When the body requires zinc, the metallothionein releases the zinc, which binds to albumin for transport throughout the body. Zinc largely ends up in the pancreas to make digestive enzymes, which are then returned to the intestines during digestion, and the zinc is then reabsorbed for reuse. When the body does not require zinc, zinc absorption decreases, and zinc is shed from the intestinal cells for excretion.