Exam 40: Digestion and Absorption

Diarrhea is one of the leading causes of infant mortality in developing countries.

The enterogastric reflex stimulates gastric motility as food enters the duodenum.

The enterogastric reflex causes:

When fat combines with magnesium, it becomes indigestible.

Match each of the digestive juices and enzymes with its corresponding description. -Major enzyme in stomach associated with protein breakdown

Of the four types of protein-digesting enzymes made by the body, only one is made by the small intestines.

List the kinds of chemical substances that we eat. Which of these need to be digested?

Sucrose is an example of a disaccharide.

Although we eat six types of chemical substances (carbohydrates, proteins, fats, vitamins, mineral salts, and water), only carbohydrates, proteins, fats, and vitamins need to be digested.

The hydrophilic portion of lecithin is attracted to the interior fat of the micelle.

The most important function of the digestive system is:

"Dietary fiber" is a carbohydrate.

Which of the following is a true statement?

The enzyme amylase functions best in a _____ pH.

During deglutition, food is denied entry to the larynx by muscle action that causes the epiglottis to block that opening.

The digestion of triglycerides produces monoglycerides and phospholipids.

Match each primary mechanism of the digestive system with its corresponding definition. -Excretion of the residues of the digestive process (feces) from the rectum, through the anus; defecation

Bile catalyzes the breakdown of fats.

Peptidase is a digestive enzyme that can function as an intracellular enzyme.

Pancreatic juice contains all of the following substances except: