Question 1
Which of the following regions of the digestive tract include an adventitia?
Choices:
- the esophagus
- the sigmoid colon
- the ileum
- the stomach
Answers:
- the esophagus
Comments:
- Correct
- That's right! Portions of the digestive tract that are intraperitoneal include a serosa, but those that are not, like the esophagus, have an adventitia.
- Continue
Question 2
Which of the following regions of the digestive tract has the largest accumulation of mucosa-associated lymphoid tissue (MALT)?
Choices:
- ileum
- jejunum
- duodenum
- stomach
Answers:
- ileum
Comments:
- Correct
- That's right! Large accumulations of MALT form Peyer’s Patches in the ileum.
- Continue
Question 3
In the large intestine, the teniae coli are a specialization of which layer?
Choices:
- muscularis externa
- serosa
- submucosa
- mucosa
Answers:
- muscularis externa
Comments:
- Correct
- That's right! In the large intestine, the longitudinal layer of the muscularis externa is reduced to three strips, the teniae coli.
- Continue
Question 4
Identify cell type A.
Choices:
- Goblet cells
- Goblet cell
- goblet
Answers:
- Goblet cells
- Goblet cell
- goblet
Comments:
- Correct
- That's right! Goblet cells are abundant in the small intestine, but even more abundant in the colon!
- Continue
Question 5
Identify structure B.
Choices:
- Intestinal gland
- Intestinal glands
- Crypts of Lieberkuhn
Answers:
- Intestinal gland
- Intestinal glands
- Crypts of Lieberkuhn
Comments:
- Correct
- That's right! The glands located within the base of the villi in the small intestine are referred to as intestinal glands or Crypts of Lieberkuhn.
- Continue
Question 6
Identify cell type C.
Choices:
- Enterocyte
- Enterocytes
- Simple columnar epithelium
Answers:
- Enterocyte
- Enterocytes
- Simple columnar epithelium
Comments:
- Correct
- That's right! The epithelium lining the small intestine is composed of enterocytes forming a simple columnar epithelium.
- Continue
Question 7
Identify structures A.
Choices:
- Duodenal glands
- Brunner’s glands
Answers:
- Duodenal glands
- Brunner’s glands
Comments:
- Correct
- That's right! The glands found within the submucosa of the duodenum are duodenal (Brunner’s) glands!
- Continue
Question 8
In what subdivision of the small intestine are these glands found?
Choices:
- Duodenum
Answers:
- Duodenum
Comments:
- Correct
- That's right! Brunner’s glands are found within the duodenum. Hence why they are also referred to as duodenal glands!
- Continue
Question 9
Identify cell type A.
Choices:
- Paneth cell
- Paneth cells
- paneth
Answers:
- Paneth cell
- Paneth cells
- paneth
Comments:
- Correct
- That's right! The eosinophilic staining cells located at the base of the intestinal glands are referred to as Paneth cells! They secrete antibacterial compounds, such as lysozyme.
- Continue
Question 10
Identify structures A.
Choices:
- Peyer’s patches
Answers:
- Peyer’s patches
Comments:
- Correct
- That's right! Peyer’s patches are found within the submucosa of the ileum of the small intestine.
- Continue
Question 11
Identify A.
Choices:
- Pectineal line
- the pectineal line
Answers:
- Pectineal line
- the pectineal line
Comments:
- Correct
- That's right! The junction between the simple columnar epithelium of the colon and the stratified squamous epithelium of the anal canal is the Pectineal Line.
- Continue
Question 12
Identify the class of epithelium B.
Choices:
- Keratinized stratified squamous epithelium
- Stratified squamous epithelium keratinized
- Stratified squamous keratinized epithelium
Answers:
- Keratinized stratified squamous epithelium
- Stratified squamous epithelium keratinized
- Stratified squamous keratinized epithelium
Comments:
- Correct
- That's right! The epithelial lining of the anus is composed of keratinized stratified squamous epithelium.
- Continue