In the Stomach, the Undifferentiated Epithelial Stem Cells Lie near the Junction

question 36

Multiple Choice

In the stomach, the undifferentiated epithelial stem cells lie near the junction between the gastric pits and gastric glands. In the intestine, the corresponding stem cells occur

• A) where the intestinal crypts meet the villi.
• B) on the tips of the villi.
• C) in the duodenal (Brunnerʹs) glands.
• D) deep within the intestinal glands (crypts of Lieberkühn).

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Definitions:

Amine

Organic molecules and functional units which possess a nitrogen atom with a lone pair, exhibiting basic properties.

Molecules

Groups of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

Sodium Hydride

A chemical compound used as a strong base in organic synthesis, represented by the formula NaH.

Organic Reactions

Chemical reactions involving organic compounds, which are mainly composed of carbon atoms along with hydrogen, oxygen, nitrogen, and other elements.