The hormone that stimulates the stomach to secrete gastric juice is:
Correct answer: C. Gastrin
- A. Enterokinase
- B. Enterogastrone
- C. Gastrin
- D. Renin
Explanation
Gastrin hormone is secreted by mucosa of stomach and it stimulates secretion of gastric juice. Gastrin is a peptide hormone produced by G cells in the pyloric antrum of the stomach, duodenum, and pancreas. It is released into the bloodstream when food enters the stomach, and stimulates the secretion of gastric acid, hydrochloric acid, and pepsin from the stomach lining. Gastrin also plays a role in gastric motility, and in the growth and differentiation of stomach cells.Enterogastrone is secreted by duodenal epithelium. Enterokinase is an enzyme that converts trypsinogen into trypsin. Renin is secreted by kidneys. It acts on angiotensinogen to form angiotensinII.
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Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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