CSCC BIO 2300 Unit 4, Concept I:
Digestive System Q & As (Verified
Answers) 2026
The stratified squamous epithelial lining of the oropharynx
and the laryngopharynx provides protection against the
______ activities associated with swallowing ingested
materials. - Correct Answers ✅abrasive
The abdominopelvic cavity is lined with moist ______
membranes. - Correct Answers ✅serous
True or false: The GI tract from the esophagus through the
large intestine is a tube composed of four concentric layers,
called tunics. - Correct Answers ✅true
A sphincter ______ the lumen opening at some point along the
GI tract, and in so doing it can help control the movement of
materials through the GI tract. - Correct Answers ✅closes
off
The oropharynx and the laryngopharynx are lined with ______
epithelium. - Correct Answers ✅nonkeratinized stratified
squamous
_______ organs primarily have an adventitia, since these
organs are only partially covered by visceral peritoneum. -
Correct Answers ✅Retroperitoneal
, CSCC BIO 2300 Unit 4, Concept I:
Digestive System Q & As (Verified
Answers) 2026
The portion of the serous membrane that directly contacts
the surface of some abdominal organs is called the ______
peritoneum. - Correct Answers ✅visceral
In the GI tract, branches of the arteries travel within the
tunics, and the mucosa contains capillaries that have ______
endothelial cells to promote absorption. - Correct Answers
✅fenestrated
The tunics comprising the GI tract wall include the ______. -
Correct Answers ✅adventitia
muscularis
submucosa
mucosa
The veins of the GI tract merge to form the ______ system of
veins. - Correct Answers ✅hepatic portal
The nerve fibers that control the contractions of the circular
and longitudinal layers of the muscularis are called
the______________nerve plexus - Correct Answers
✅myenteric
Digestive System Q & As (Verified
Answers) 2026
The stratified squamous epithelial lining of the oropharynx
and the laryngopharynx provides protection against the
______ activities associated with swallowing ingested
materials. - Correct Answers ✅abrasive
The abdominopelvic cavity is lined with moist ______
membranes. - Correct Answers ✅serous
True or false: The GI tract from the esophagus through the
large intestine is a tube composed of four concentric layers,
called tunics. - Correct Answers ✅true
A sphincter ______ the lumen opening at some point along the
GI tract, and in so doing it can help control the movement of
materials through the GI tract. - Correct Answers ✅closes
off
The oropharynx and the laryngopharynx are lined with ______
epithelium. - Correct Answers ✅nonkeratinized stratified
squamous
_______ organs primarily have an adventitia, since these
organs are only partially covered by visceral peritoneum. -
Correct Answers ✅Retroperitoneal
, CSCC BIO 2300 Unit 4, Concept I:
Digestive System Q & As (Verified
Answers) 2026
The portion of the serous membrane that directly contacts
the surface of some abdominal organs is called the ______
peritoneum. - Correct Answers ✅visceral
In the GI tract, branches of the arteries travel within the
tunics, and the mucosa contains capillaries that have ______
endothelial cells to promote absorption. - Correct Answers
✅fenestrated
The tunics comprising the GI tract wall include the ______. -
Correct Answers ✅adventitia
muscularis
submucosa
mucosa
The veins of the GI tract merge to form the ______ system of
veins. - Correct Answers ✅hepatic portal
The nerve fibers that control the contractions of the circular
and longitudinal layers of the muscularis are called
the______________nerve plexus - Correct Answers
✅myenteric
