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Which of the following organic nutrients are NOT absorbed into capillaries in the intestinal villi?

In the absence of hormones, the collecting ducts are relatively impermeable to water.

Which is the only digestive structure with three muscle layers?

Glucose and protein are both normally absent from urine- but for different reasons.A) Explain the reason for the absence of glucose B) Explain the reason for the absence of protein(Answer both A and B!)

Amino acids are largely absorbed across the apical surface of the jejunum epithelium by which process?

“Map out” the steps of digestion and absorption of a starch (polysaccharide) as it is converted to a molecule of glucose STARTING at the duodenum.  Track the starch from duodenum to where and how it reaches the bloodstream.  Be sure to indicate key enzymes and cellular processes involved.

Chylomicrons form in the intestinal lumen. Micelles are absorbed into lacteals.

All but one of the following is a function of the low pH found in the stomach. Select the description below that does NOT reflect a role of stomach acid.

Which of the following is NOT found in “pancreatic juice”?

Sympathetic stimulation of the muscularis externa promotes ________.