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What substance stimulates pancreatic cells to secrete bicarbonate?

A.

Gastrin

B.

Secretin

C.

Somatostatin

D.

Cholecystokinin

Answer and Explanation

The Correct Answer is B

A. Gastrin: Gastrin stimulates gastric acid secretion in the stomach, not pancreatic bicarbonate.

B. Secretin: Secretin stimulates the pancreas to secrete bicarbonate, which neutralizes stomach acid in the duodenum.

C. Somatostatin: Somatostatin inhibits many digestive processes, including the release of digestive hormones, not bicarbonate.

D. Cholecystokinin (CCK): CCK stimulates the release of digestive enzymes from the pancreas but not bicarbonate.


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Related Questions

Correct Answer is C

Explanation

A. Aldosterone hormone: Aldosterone affects sodium and potassium reabsorption, increasing water retention indirectly, but it does not directly increase water permeability in the collecting ducts.

B. Atrial natriuretic peptide hormone: This hormone decreases blood volume by inhibiting sodium reabsorption, leading to more water excretion, not reabsorption.

C. Antidiuretic hormone (ADH): ADH increases the permeability of the collecting ducts to water, allowing more water to be reabsorbed into the bloodstream.

D. Parathyroid hormone: This hormone primarily regulates calcium levels, not water permeability.

Correct Answer is A

Explanation

A. Broad ligament: The broad ligament is a peritoneal fold that supports the uterus and attaches it to the lateral pelvic walls.

B. Adventitia: This is the outer connective tissue layer that supports the uterus but does not suspend it from the pelvic wall.

C. Round ligament: This ligament supports the uterus but primarily connects the uterus to the labia majora and does not suspend it from the lateral pelvic wall.

D. Ovarian fossa: This is a depression in the pelvic cavity that contains the ovaries, but it does not suspend the uterus.

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