23. The Digestive System

More than one choice may apply.

A digestive organ that is not part of the alimentary canal is the

a. Stomach

b. Liver

c. Small intestine

d. Large intestine

e. Pharynx

Most of the digestive tract is lined by_____epithelium.

(a) pseudostratified ciliated columnar

(b) cuboidal

(c) stratified squamous

(d) simple

(e) simple columnar

Name and describe the layers of the digestive tract, proceeding from the innermost layer nearest the lumen to the outermost layer.

More than one choice may apply.

Which of the following terms are synonyms?

a. Gastrointestinal tract

b. Digestive system

c. Digestive tract

d. Alimentary canal

Trace the pathway that food takes through the entire alimentary canal, from the oral cavity to the anal canal.

Label the four layers of the digestive tract in the following figure.

<IMAGE>

a. ___

b. ___

c. ___

d. ___