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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 |
| Corticotrophin (ACTH) | ______ |
add a note on deficiency of thyroxine.
_______ maintains basic metabolic rate.
(A) Thyroxine
(B) ADH
(C) GH
(D) Oxytocin
What is the difference between an exocrine gland and an endocrine gland?
Define the following:
Endocrine glands
A gland having endocrine as well as exocrine function is
Mention three important differences between the action of hormones and that of nerves in the regulatory mechanism of our body.
Given alongside is an outline diagram of human body showing position of certain organs.
 |
- Name the parts numbered 1 to 4.
- What is common to all these parts in regard to the nature of their functions?
- Name the nutrient element which is essential for the normal working of part 2.
Identify the ODD term in each set and name the CATEGORY to which the remaining three belong :
Example : glucose, starch, cellulose, calcium
Odd term : calcium
Category : others are different types of carbohydrates
Addison’s disease, Cushing’s Syndrome, Acromegaly, Leukemia
The diagram give below represents an endocrine gland in the human body. Study the diagram and answer the following questions: 
Explain the term ‘Hormone’. What is the role of Tropic hormones in the human body?
Why are hormones called ‘chemical messengers’?
Is the following gland an exocrine or an endocrine gland?
Salivary gland
Given alongside are the diagrammatic sketches of some endocrine glands. Observe the figures and answer the following questions:
(i) Label the parts numbered 1 to 5.
(ii) Name the hormones secreted by (2) and (5).
(iii) Which chemicals in our body are greatly affected by hormones?
(iv) What is the chemical nature of hormones?
(v) Name the elements related to the functioning of hormones secreted by the structure (2) and (5).
State the Function
Oxytocin
Choose the Odd One Out
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column A | Column B |
| (i) Pituitary | (a) produces male sex characteristics |
| (ii) Ovaries | (b) decreases blood sugar level |
| (iii) Thyroid | (c) increases heart and breathing rate raises blood pressure |
| (iv) Thymus | (d) produces female sex characteristics |
| (v) Adrenals | (e) is known as emergency hormone |
| (vi) Hypothalamus | (f) regulates the level of calcium and phosphorus |
| (vii) Pancreas | (g) increases the rate of metabolism |
| (viii) Testes | (h) maintains the level of calcium |
| (ix) Parathyroid | regulates the amount of water excreted in the urine. |
| (x) Cretinism | (j) simulates skeletal growth |
| (xi) Diabetes mellitus | (k) regulates the activities of other glands |
| (xii) Insulin shock | (l) stimulates the development of male and female sex organs |
| (xiii) Gigantism | (m) Shortage of glucose in the blood. |
| (xiv) Enlargement of breasts in adult males | (n) Over-secretion of growth hormone |
| (xv) Exophthalmic goiter | (o) Excess of glucose in the blood |
| (xvi) Acromegaly | (p) Over-secretion of thyroxin |
| (xvii) Addison’s disease | (q) Dwarfism and mental retardation |
| (xviii)Cretinism | (r) Over-secretion of cortical hormones |
| (xix) Dwarfism | (s) Under-secretion of the adrenal cortex |
| (xx) Adrenalin | (t) Under-secretion of thyroxin in children |
| (xxi) Vasopressin | (u) Over-secretion of growth hormones in adults |
Serum calcium level is regulated by ______.
Which of the following gland is related with immunity?
Comment on the functions of adrenalin.
