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प्रश्न
You have learnt that a characteristic feature of endocrine system is the presence of feed back loops. By this what is meant if hormone A stimulates gland ‘X’ to secrete hormone B, the production of ‘A’ could be modified when the level of B changes in our blood. An example is the relation between hormones LH and estrogen (E2). An old woman exhibits the following features. High levels of LH in blood but low levels of E2 in the blood. Another woman exhibits high level of LH in blood and also high level of E2 in the blood. Where is the defect in both these women? Provide suitable diagram to support this answer.
उत्तर
If an old woman exhibits high levels of LH in her blood but low levels of E2 in the blood then it may be due to any abnormality in the anterior pituitary. If an old woman exhibits high levels of LH in blood and high levels of E2 in the blood then it may be due to any abnormality in the anterior pituitary or ovary.
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संबंधित प्रश्न
The diagram give below represents an endocrine gland in the human body. Study the diagram and answer the following questions:
Identify the endocrine gland. Where is it located?
Give the special function of the following:
Somatotrophic hormone
Sketch and label the V. S. of pituitary gland.
State the Location
Pituitary gland
Hyper secretion of growth hormone in childhood cause ______.
Match the following.
| Column I | Column II | ||
| i. | Insulin | p. | Addison's disease |
| ii. | Thyroxine | q. | Diabetes mellitus |
| iii. | Mineralocorticoids and Glucocorticoids | r. | Acromegaly |
| iv. | Growth Hormone | s. | Goitre |
Hypothalamus is a super master endocrine gland. Elaborate.
Spermatogenesis is induced by ______.
Write a short note on the function of the following hormone:
Androgens
Mention if the following statement is true (T) or false (F). If false, rewrite the correct word (not words) striking out the single wrong one.
Pituitary has three lobes - anterior, posterior and intermediate.
