Question

what are the function of following endocrine glands
(i) Pineal gland
(ii) parathyroid gland
(iii) Thymus
(iv) hypothalamus

Answer 1

Located deep in the center of the brain, the pineal gland was once known as the “third eye.” The pineal gland produces melatonin, which helps maintain circadian rhythm and regulate reproductive hormones.


The parathyroid glands are four tinyglands, located in the neck, that control the body's calcium levels. Eachgland is about the size of a grain of rice (weighs approximately 30 milligrams and is 3-4 millimeters in diameter). The parathyroids produce a hormone called parathyroid hormone

The thymus gland, despite containing glandular tissue and producing several hormones, is much more closely associated with the immune system than with the endocrine system. Thethymus serves a vital role in the training and development of T-lymphocytes or T cells, an extremely important type of white blood cell.

The hypothalamus (from Greek ὑπό, "under" and θάλαμος, thalamus) is a portion of the brain that contains a number of small nuclei with a variety of functions. One of the most important functions of thehypothalamus is to link the nervous system to the endocrine system via the pituitary gland (hypophysis).