BackMark the following statements as true or false. If a statement is false, correct it to make a true statement.
The mucosa of the esophagus, pharynx, and oral cavity contains simple squamous epithelium to protect it from abrasion.
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
b. The esophageal and pharyngeal phases of swallowing are mediated by the swallowing reflex of the brainstem and the enteric nervous system.
Make a simple line drawing of the organs of the alimentary canal and label each organ. Then add three labels to your drawing—salivary glands, liver, and pancreas—and use arrows to show where each of these organs empties its secretions into the alimentary canal.
A drop in pH below 4.5 in the duodenum stimulates the secretion of
(a) Secretin
(b) Cholecystokinin
(c) Gastrin
(d) All of these
Double sheets of peritoneum that provide support and stability for the organs of the peritoneal cavity are the
(a) Mediastina
(b) Mucous membranes
(c) Omenta
(d) Mesenteries
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.