Exam 21: The Digestive System

Proteins must first be enzymatically degraded to single amino acids before entering the capillaries of the hepatic portal system.Is this What is the significance of this? Is absorption of carbohydrates and lipids restricted to monomers? Explain.

Match the structure or compound to its function. -transports iron to the blood

The primary complex carbohydrate ingested and digested by people is ________.

What is the ENS,and when was it discovered? What is its significance,what is its nickname,and what are the characteristics that justify that nickname?

Match the structure to its function. -Protein digestion is completed here.

Name the proenzymes that the pancreas secretes.Which one is involved in the activation of the other proenzymes? What are their active forms?

Maltose is broken down by maltase into two molecules of ________.

Match the following structures with their functions. -organ that adds exocrine secretions to the duodenum via a duct

Chief cells secrete

In response to the hormone secretin,the pancreas secretes a fluid

What are the end products of carbohydrate digestion? What are the enzymes involved; where are they located; and what reactions do they catalyze?

Intestinal crypts

You are studying the toxic effects of a newly discovered tropical plant extract.From preliminary studies,it appears that the toxin prevents H⁺-dependent membrane transport.Explain which digestive processes may thus be impaired.

A drug that blocks the action of the hormone cholecystokinin would affect

Most products of fat digestion are absorbed by

The primary products of protein digestion are ________,________,and ________.

Match the following structures with their functions. -organ where most digestion occurs

Match the hormone with the correct statement. -stimulates insulin release

Match the hormone with the correct statement. -stimulates bile release

Match each product with the cell or region that secretes or contains it. -brush border