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Chemical Coordination and Integration

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
Describe gonadotrophin hormone.

Gonadotrophin hormone : These are hormones which stimulate the gonadal activity. It is of two types :

(1) Follicle stimulating hormone (FSH) : It stimulates gonads to form gametes. It is present in both the sexes. In males it regulates spermatogenesis and in females it also stimulates ovary to produce oestrogens and stimulates the growth and development of the ovarial follicles.

(2) Luteinizing hormone : In males the LH results in thesynthesis and secretion of the androgens from the testis. 
In females LH induces the ovulation.

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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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Name the endocrine gland which is H shaped.

Thyroid gland.
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Name the largest endocrine gland.

Thyroid gland.
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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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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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