3.2 Anatomy of the Mouth, Pharynx, and Esophagus Part 3 Flashcards
1
Q
What is aspiration?
A
when food or liquid enters the lungs
2
Q
What is the bodys way of preventing aspiration?
A
coughing
3
Q
How many layers of tissue does the esophagus contain?
A
four
4
Q
What are the four layers of tissue in the esophagus?
A
mucosa
submucosa
muscularis exeterna
serosa
5
Q
What is the mucosa of the esophagus?
A
innermost layer that secretes mucus into the interior of the GI tract
6
Q
What is the submucosa of the esophagus?
A
second layer that contains blood and lymph vessels, lymph nodes, nerves, and mucous glands
7
Q
What is the muscularis externa of the esophagus?
A
two layers of muscles: outer longitudinal fibers and inner circumferential fibers
8
Q
What is the serosa of the esophagus?
A
outer layer that makes serous fluid
