Describe about the following in detail :
• Thyroid glands
• Pineal glands
• Sebaceous glands
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Answers
Thyroid gland:-
Characteristic:The thyroid gland is a endocrine gland. It is 'butterfly shaped' and has two side lobes connected by a structure called isthmus in the middle. It is generally brownish in colour.
Location:-The location of the thyroid gland is along the wind pipe. It generally lies below the Adam's apple
(a round apple like structure,which generally appears in the boys and girls during adolescence).
Functions:-The thyroid gland secretes a hormone called Thyroxine (T4) . The thyroid hormones mainly influence body metabolism,temperature,growth and development.
Pineal gland:-
Charecteristic:The pineal gland is a small endocrine gland. It is generally 'pea shaped'. It is commonly known as third eye.
Location:It lies in the back portion of the third cerebral ventricle of the brain.
Functions:It secretes a hormone called Melatonin which plays many important roles in the body including the sleep patterns.
Sebaceous gland:-
Charecteristic:It is a small oil producing gland.
Location:It is present in the skin of mammals.
Functions:The main function of sebaceous gland is the secretion of sebum.Sebum helps in lubrication of skin against friction and makes in more imprevious to moisture.
thyroid gland
The thyroid gland is an endocrine gland in your neck. It makes two hormones that are secreted into the blood: thyroxine (T4) and triiodothyronine (T3). These hormones are necessary for all the cells in your body to work normally.
pineal glands
The pineal gland is a small, pea-shaped gland in the brain. Its function isn't fully understood. Researchers do know that it produces and regulates some hormones, including melatonin. Melatonin is best known for the role it plays in regulating sleep patterns. Sleep patterns are also called circadian rhythms.
sebaceous gland
A sebaceous gland is a microscopic exocrine gland in the skin that opens into a hair follicle to secrete an oily or waxy matter, called sebum, which lubricates the hair and skin of mammals.