1)hypothalamus and pituitary gland:-it controls the activities of other endocrine gland and it is also known as master gland.

2)thyroid gland:-it maintains the calcium level in the blood and bones.

3)parathoid gland:-it helps in proper development of bones that depends on the hormone.

4)thymus gland:-it accelerates metabolism and speeds up growth.

1. hypothalamus --> present in brain

master switch board---> controls endocrine system


1. releasing hormones.
2. Inhibitory hormone
-----> regulate the function of hormone secreted by pituitary gland.


2.Pitutary gland---> just below the brain
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master gland
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regulate all endocrine gland
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growth hormone

1. growth of human body
2. development of bones and muscles
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too much growth hormone tall ,less growth hormone small.


3. pineal gland----> brain
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Secretes
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melatonin---> regulate sleep wake cycle.

4. thymus gland --> lower part of neck and upper part of chest
---> development of immune system in body.

5. thyroid gland
---> thyroxine hormone
--->Control rate of metabolism of Carbohydrates ,proteins fats.