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The β cells in the pancreas secrete insulin .What do α cells secrete?

The β cells in the pancreas secrete insulin .What do α cells secrete? Correct Answer Glucagon

Explanation:

  • The pancreas is a compound (both exocrine and endocrine) elongated organ situated between the limbs of the ‘C’ shaped duodenum.
  • 99% part of the pancreas is exocrine while only 1% part is endocrine
  • The exocrine portion (acini cells) secretes an alkaline pancreatic juice containing enzymes and the endocrine portion (islets of Langerhans) secretes hormones, insulin, and glucagon. islets of Langerhans has 2 types of cells α cells & β cells, the α cells surround the β cells
  • Insulin is secreted by the β cells, while α cells secrete glucagon.

​​Important Points 

  • Both insulin & glucagon are very important for sugar metabolism.
  • Insulin is released into the bloodstream to lower down blood sugar levels and prevent hyperglycemia.
  • Glucagon is released into the bloodstream to prevent blood sugar levels from dropping too low (hypoglycemia)

Additional Information 

  • Oxytocin: It is an endocrine gland secretion. It is also known as the birth hormone. It stimulates uterine contraction during the time of childbirth.
  • Thyroxine: It is an endocrine secretion of the thyroid gland. The thyroid gland requires 120 microgram Iodine per day for the production of thyroxine It regulates the basal metabolic rate of the body.
  • Vasopressin: Also called Antidiuretic hormone secreted by the posterior pituitary gland. It mainly acts on the kidney and stimulates the reabsorption of water by the distal convoluted tubules and thereby reduces the loss of water through urine (Diuresis) so-called antidiuretic hormone

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