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Science Clinic => Health Science => Anatomy => Topic started by: joe on Apr 11, 2021

Title: Name the proenzymes secreted by the pancreas. Which one is involved in the activation of the other ...
Post by: joe on Apr 11, 2021

Question 1

Make a map showing the relationships of the following terms involved with gastric secretion.

chief cell
D cell
ECL cell
enteric sensory neuron
G Cell
gastrin
H+
histamine
parietal cell
pepsin
pepsinogen
somatostatin
vagus nerve

Where appropriate, indicate stimulatory or inhibitory effect. Terms may be added as needed.

Question 2

Name the proenzymes secreted by the pancreas. Which one is involved in the activation of the other proenzymes? What are their active forms?

Title: Name the proenzymes secreted by the pancreas. Which one is involved in the activation of the other ...
Post by: wergv on Apr 11, 2021

Answer 1

Maps will vary. Figure 21.9 and 21.10 in the chapter.

Answer 2

Proenzymes include: trypsinogen, chymotrypsinogen, procarboxypeptidase, procolipase, and prophospholipase. When it comes into contact with enteropeptidase in the brush border of the intestine, trypsinogen is converted to trypsin, which then activates the other proenzymes. The pathway can be found in Figure 21.14 in the chapter.