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Chemical Coordination and Integration

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
Discuss the hormones secreted by hypothalamus.

Hormones secreted by hypothalamus are:

1. Thyrotrophin-releasing hormone : It acts on the  anterior lobe of pituitary gland and stimulates it to release thyrotrophin or thyroid stimulating hormone.

2. Adrenocorticotrophin releasing-hormone : It acts on the anterior lobe of pituitary gland and stimulates it to release adrenocoticotrophin hormone.

3. Gonadotrophin releasing hormone : It acts anterior lobe of pituitary gland, resulting in the release gonadotrophin hormone.

4. Somatotrophin-releasing hormone : It stimulates anterior lobe of pituitary gland and directs it to release somatotrophin hormone or growth hormone.

5. Growth inhibiting hormone : It inhibits anterior lobe of pituitary gland not to release growth hormone. eg . Somatostatin


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Name the largest endocrine gland.

Thyroid gland.
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Name the endocrine gland which is H shaped.

Thyroid gland.
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What is goitre?

Goitre is the condition in the the thyroid gland is enlarged and the neck portion becomes swollen .It is due to the deficiency of iodine in our diet which results in the less production and secretion of the thyroid hormones that is hypothyroidism.
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Why is the Parathyroid hormone called hypercalcemic hormone?

PTH or parathyroid hormone is also called hypercalcemic hormone as it increase the calcium level in the blood.
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Name the cells that the thyroid gland is composed of.

The thyroid gland is composed of the following :
i. Follicles
ii. Stromal tissue
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