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प्रश्न
Short answer question
Name the secretion of alpha, beta, and delta cells of islets of langerhans. Explain their role.
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उत्तर
Islets of Langerhans are endocrine cells of the pancreas.
They are four types of cells in Islets of Langerhans which have an endocrine role i.e. they secrete hormones.
- Alpha cells (α cells): They constitute 20% of Islets of Langerhans. They secrete hormone glucagon. Glucagon stimulates glycogenolysis (the breakdown of glycogen) in the liver which causes hyperglycemia.
- Beta cells (β cells): They constitute 70% of Islets of Langerhans. They secrete insulin which stimulates glycogenesis (formation of glycogen) in the liver and muscles. Insulin causes hypoglycemia by increasing the uptake of glucose by cells.
- Delta cells (δ cells): They constitute 10% of Islets of Langerhans. These cells secrete somatostatin which inhibits the secretion of insulin and glucagon. It also lowers gastric secretions, motility, and absorption in the digestive tract. Somatostatin inhibits the release of growth hormone.
- PP cells or F cells: These cells secrete pancreatic polypeptide (PP) and inhibit the release of pancreatic juice.
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संबंधित प्रश्न
Identify the odd one in the following and mention what the rest is:
Give the special function of the following:
Insulin hormone
Select the odd one out of the following:
Adrenaline, Noradrenaline, Insulin
Define the following:
Beta cells
Diabetes mellitus disease is caused due to ______.
Secretin is secreted by:
Which gland secretes digestive enzymes and hormones?
What is erythropoiesis? Which hormone stimulate it?
State whether true or false:
Insulin resistance results in a disease called diabetes mellitus.
A sample of urine was diagnosed to contain high content of glucose and ketone bodies. Based on this observation, answer the following:
What is the condition called and how can it be rectified?
