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Exam 21: The Digestive System

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Question 31

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The lamina propria and mucous epithelium are components of the

A) serosa.
B) adventitia.
C) muscularis mucosa.
D) mucosa.
E) submucosa.

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Question 32

Multiple Choice

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Digestive reflexes originating in the CNS are called ________ reflexes.

A) defecation
B) short
C) long
D) deglutition

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Question 33

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List the six types of epithelial cells associated with gastric glands.Briefly describe each one's role in the stomach.

Long reflexes that originate completely outside the digestive system include ________ reflexes and ________ reflexes, which are called ________ reflexes.

Nearly 90% of our dietary calories from fat are in the form of

Essential nutrients are those that our cells require but cannot make, and thus they must be present in the diet.Only some amino acids and some fatty acids are essential.What does that suggest about extreme diets that eliminate fats or proteins? What does that suggest about our carbohydrate intake? Describe the typical American diet, in terms of relative amounts of ingested carbohydrates, fats, proteins, and nucleic acids.Propose some explanations for why one of those is predominant.

The layer of connective tissue between the digestive epithelium and a layer of smooth muscle is the

You and your lab partners in a human anatomy course have just removed the intestines from an adult cadaver, and cut away connective tissues as necessary to uncoil the intestines into a straight line that could be measured.Your professor told you that the intestinal tract of an adult of this size and gender is typically about 13 ft.Your measurement is 22 ft.One of the lab partners insists that everything is smaller in preserved cadavers due to dehydration.Address this suggestion, and propose some other explanations for the difference.

The primary complex carbohydrate ingested and digested by people is

Match the structure to its function. -Carbohydrate digestion begins here.

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

Slow waves originate in modified smooth muscle cells called

Compare the integration of long reflexes and short reflexes.Where is each type integrated?

The ________ are sheets of peritoneal membrane that hold some of the visceral organs in their proper position.

Vomiting and diarrhea are similar since both

Bile salts aid in the digestion of fats by ________ large fat droplets.

Match each product with the cell or region that secretes or contains it. -goblet cells

________ involve short segments of intestine that alternately contract and relax.They are responsible for ________.

An enzyme that will digest proteins into amino acids is

The mucosa of the majority of the digestive tract contains simple columnar epithelium, while the esophagus and the anus have stratified squamous epithelium.Why is this the case? What purpose does each type of epithelium serve in the digestive tract?