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प्रश्न
Write a detailed account of gastro intestinal tract hormones.
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उत्तर
Group of specialized endocrine cells present in the gastrointestinal tract secretes hormones such as gastrin, cholecystokinin (CCK), secretin and gastric inhibitory peptides (GIP). Gastrin acts on the gastric glands and stimulates the secretion of HCl and pepsinogen.
Cholecystokinin (CCK) is secreted by duodenum in response to the presence of fat and acid in the diet. It acts on the gall bladder to release bile into duodenum and stimulates the secretion of pancreatic enzymes and its discharge. Secretin acts on acini cells of pancreas to secrete bicarbonate ions and water to neutralize the acidity. Gastric inhibitory peptide (GIP) inhibits gastric secretion and motility.
संबंधित प्रश्न
| Hormones | Target gland |
| Melanotrophin (MSH | ______ |
Match the items of column I with those of column II
| Column I | Column II | ||
| 1 | β (beta) cells of islets of Langerhans |
a | condition due to undersecretion of thyroxine in adults |
| 2 | Thyroid | b | Glucocorticoids |
| 3 | Cretinism | c | Exophthalmic goitre |
| 4 | Addison's disease | d | Increases heart beat |
| 5 | Hypothyroidism | e | Thyroxine |
| 6 | Myxoedema | f | Adrenal cortex |
| 7 | Adrenaline Under secretion of thyroxine in a child |
h | Under secretion of thyroxine in a child |
Mention three important differences between the action of hormones and that of nerves in the regulatory mechanism of our body.
Which one of the following statement is true/ false?
The pituitary gland is both exocrine and endocrine in function.
Which parts of the alimentary canal produce hormones?
Complete the following:
| Gland/Organ | Hormone | Function |
| (i) Stomach | __________ | __________ |
| (ii) Parathyroid | __________ | __________ |
| (iii) __________ | __________ | Lowers blood sugar level. |
| (iv) Adrenal medulla | __________ | __________ |
| (v) Pancreas (Alpha cells) | __________ | __________ |
| (vi) Testes | __________ | __________ |
Give the Technical Term: Name the glands which secrete the following hormone: Relaxin
Fill in the Blanks:
The glands with ducts are called ______.
Given below is an outline of the human body showing the important glands.
(i) Name the glands marked 1 to 5.
(ii) Name the hormone secreted by 2. Give one important function of this hormone.
(iii) Name the endocrine cells present in part 3.
(iv) Name the hormone secreted by part 3. Give one important function of this hormone.
State the Function
Oestradiol
Choose the Odd One Out
Choose the Odd One Out
Choose the Odd One Out
Which statement is not for a hormone?
Vasopressin is concerned with:
Leydig cells are meant for:
Human chronic Gonadotropin:
Spermatogenesis in mammalian testes is controlled by ______.
Serum calcium level is regulated by ______.
Predict the effects of removal of pancreas from the human body.
