Question

Sebaceous glands are also known as
A. Oil glands
B. Sweat glands
C. Salivary glands
D. Pituitary glands

Answer 1

Hint: The human body contains different types of secreting cells that secrete certain materials which are required in normal physiological processes. The secreting substances are useful in maintaining the different types of physiological as well as other biological activities.

Complete answer:
Glands are known to synthesize substances such as hormones and these secretions are released into the bloodstream or into the cavities and reach the specific organs for their actions. The glands that release the secretions into the bloodstream are known as endocrine glands and the exocrine glands are the glands that secrete the hormones into the cavities.
A sebaceous gland is an exocrine gland that is present in the skin. They open into a hair follicle that secretes an oily waxy matter which is known as the sebum. The sebum is an oily, waxy substance and so the sebaceous glands are also known as oil glands. It provides to coat, moisturize and protect the skin from water and excessive loss of moisture.
 The main function of the sebum gland is lubrication of the hair and skin surface of mammals. The sebaceous glands are present throughout the skin, scalp of head but are not present in the palms of hand and soles of feet. They are also found in areas of hairless surfaces such as eyelids, nose and inner mucosal membrane of cheeks and nipples.
The sweat glands produce sweat. These glands are tubular structures on the skin and secrete the substance onto the epithelial surface of the skin. The main function of sweating is the secretion of water-based secretion.
Salivary glands are present in the mouth region and secrete saliva which is a water based secretion and helps in chewing and swallowing.
Pituitary glands are small pea sized endocrine glands that are present in the brain and secrets a variety of different hormones which affect different physiological activities of the body.

Hence, the correct answer is option (A).

Note: A gland is a group of cells that are present in the body of the animals and functions to secret certain types of secretions which can be water based or oil based. The sebaceous glands are known as oil glands as they secrete an oil based waxy secretion which is known as the sebum.