GENERAL HISTOLOGY

INTEGUMENTERY SYSTEM

DERMIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Sebaceous glands secrete an oil for hair and skin called:
A
keratin
B
melanin
C
cerumen
D
sebum
Explanation: 

Detailed explanation-1: -The normal function of sebaceous glands is to produce and secrete sebum, a group of complex oils including triglycerides and fatty acid breakdown products, wax esters, squalene, cholesterol esters and cholesterol. Sebum lubricates the skin to protect against friction and makes it more impervious to moisture.

Detailed explanation-2: -Sebaceous glands secrete the oily, waxy substance called sebum (Latin: fat, tallow) that is made of triglycerides, wax esters, squalene, and metabolites of fat-producing cells.

Detailed explanation-3: -Sebum is an oily, waxy substance produced by your body’s sebaceous glands. It coats, moisturizes, and protects your skin. It’s also the main ingredient in what you might think of as your body’s natural oils.

Detailed explanation-4: -Human sebum consists of squalene, esters of glycerol, wax and cholesterol, as well as free cholesterol and fatty acids (Table 1). Triglycerides and fatty acids, taken together, account for the predominant proportion (57.5%), followed by wax esters (26%) and squalene (12%).

There is 1 question to complete.