Match the hormone or regulatory mechanism to digestive function.?
a. Enterokinase b. gastrin c. intestinal cells of Cajal d. cholecystokinin e. CFTR
f.enteric nervous system
1._______ this hormone contributes to the secretion of pancreatic juice
2._______ this component of the nervous system regulates peristalsis
3._______ partial digestion of proteins in the stomach stimulates the release of this hormone
4._______ this receptor protein controls movement of chloride ion across the membranes of the pancreatic ductules; defects in this protein contribute to cystic fibrosis
5._______ this “brush border” enzyme, produced in the microvilli of the small intestine, is required for the activation of trypsin
6._______ these cells, neither muscle nor nervous cells, are thought to control segmentation of the small intestine
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To match the hormone or regulatory mechanism to digestive function, we need to understand the functions of the given options. Here's how you can find the answers:
1. Start by understanding the role of each hormone or regulatory mechanism in digestive function. Then, match it to the corresponding description given.
a. Enterokinase: Enterokinase is an enzyme involved in the activation of trypsinogen to trypsin in the small intestine.
b. Gastrin: Gastrin is a hormone that stimulates the secretion of gastric acid in the stomach.
c. Intestinal cells of Cajal: The intestinal cells of Cajal are pacemaker cells found in the gastrointestinal tract that regulate peristalsis.
d. Cholecystokinin: Cholecystokinin is a hormone that stimulates the secretion of digestive enzymes from the pancreas and the release of bile from the gallbladder.
e. CFTR (Cystic Fibrosis Transmembrane Conductance Regulator): CFTR is a receptor protein that controls the movement of chloride ions across cell membranes. Defects in this protein contribute to cystic fibrosis.
f. Enteric nervous system: The enteric nervous system is a part of the autonomic nervous system that regulates the function of the gastrointestinal tract, including peristalsis.
2. Now, match the descriptions given in the question to the correct hormone or regulatory mechanism:
1. _______ This hormone contributes to the secretion of pancreatic juice.
- The hormone that contributes to the secretion of pancreatic juice is cholecystokinin (d).
2. _______ This component of the nervous system regulates peristalsis.
- The component of the nervous system that regulates peristalsis is the enteric nervous system (f).
3. _______ Partial digestion of proteins in the stomach stimulates the release of this hormone.
- Partial digestion of proteins in the stomach stimulates the release of gastrin (b).
4. _______ This receptor protein controls movement of chloride ion across the membranes of the pancreatic ductules; defects in this protein contribute to cystic fibrosis.
- The receptor protein that controls the movement of chloride ions across the membranes of the pancreatic ductules is CFTR (e).
5. _______ This "brush border" enzyme, produced in the microvilli of the small intestine, is required for the activation of trypsin.
- The "brush border" enzyme required for the activation of trypsin is enterokinase (a).
6. _______ These cells, neither muscle nor nervous cells, are thought to control segmentation of the small intestine.
- The cells that are thought to control segmentation of the small intestine are the intestinal cells of Cajal (c).
I hope this helps you match the hormone or regulatory mechanism to their respective digestive functions.