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e progressive dehydration of indigestible residue

e progressive dehydration of indigestible residue.

B) the input of food into the digestive tract.

C) the enzymatic breakdown of food.

D) the absorption of nutrients in the gut.

E) the effects of chewing, churning, and segmentation.

2) Chemical digestion refers to

A) the progressive dehydration of indigestible residue.

B) the input of food into the digestive tract.

C) the enzymatic breakdown of food.

D) the absorption of nutrients in the gut.

E) the effects of chewing, churning, and segmentation.

3) Which function(s) is/are NOT continuously regulated by the GI tract?

A) absorption only

B) motility only

C) secretion only

D) All 3 functions are regulated.

E) None of the 3 functions are regulated.

4) Which of the following is an accessory organ of digestion?

A) stomach

B) pancreas

C) spleen

D) colon

E) esophagus

5) The ________ is a significant site of absorption of water and electrolytes, but NOT of nutrients.

A) mouth

B) stomach

C) small intestine

D) large intestine

E) None of the answers are correct.

6) Which of the following is the sequence of layers from the lumen to the outer wall of the digestive tract?

A) serosa, submucosa, mucosa, muscularis externa

B) submucosa, mucosa, serosa, muscularis externa

C) mucosa, submucosa, serosa, muscularis externa

D) submucosa, muscularis externa, serosa, mucosa

E) mucosa, submucosa, muscularis externa, serosa

7) The lamina propria and mucous epithelium are components of the

A) serosa.

B) adventitia.

C) muscularis mucosa.

D) mucosa.

E) submucosa.

8) The layer of loose connective tissue beneath the digestive epithelium is the

A) lamina propria.

B) muscularis mucosae.

C) submucosa.

D) submucosal plexus.

E) myenteric plexus.

9) Contraction of the ________ alters the shape of the intestinal lumen and moves epithelial pleats and folds.

A) mucosa

B) submucosa

C) submucosal plexus

D) muscularis mucosa

E) adventitia

10) Rugae, plicae, and villi are all features that accomplish

A) secretion of enzymes.

B) secretion of hormones.

C) an increase in surface area.

D) immune function.

E) mechanical digestion.

Dec 11 2019 View more View Less

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