Correct Answer - Option 1 : ANF
The correct answer is ANF.
- Atrial Natriuretic Peptide ( ANP ) is also known as Atrial Natriuretic Factor ( ANF ).
- It is a type of hormone that is secreted from the cardiac atria.
- The function of ANP includes causing a reduction in expanded extracellular fluid ( ECF ) volume by increasing renal sodium excretion.
- ANP is synthesized and secreted by cardiac muscle cells in the walls of atria in the heart.
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Volume receptors are present in these cells that respond to increased stretching of the arterial wall due to increased atrial blood volume.
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De Bold in 1981 dicovered the natriuretic factor.
- The gastric inhibitory polypeptide, a hormone secreted by cells of the intestinal mucosa that blocks the secretion of hydrochloric acid into the stomach.
- Cholecystokinin (CCK) is a neuropeptide and gut hormone that regulates pancreatic enzyme secretion and gastrointestinal motility and acts as a satiety signal.
- ADH is also called arginine vasopressin, a hormone made by the hypothalamus in the brain and stored in the posterior pituitary gland.
There are a total of three types of atrial natriuretic peptide receptors namely -
- NPR1
- NPR2
- NPR3