Question

What is the substance secreted from oil glands called?

• A. Sebum
• B. Urine
• C. Blood
• D. Sweat

Hint:

Remember: Sebaceous glands → Sebum (oil); Sudoriferous glands → Sweat. Sebum keeps skin and hair moisturized and has antimicrobial properties.

Answer 1

The Correct Option is A

Step 1: Understanding oil glands (sebaceous glands).
Oil glands, also known as sebaceous glands, are small glands in the skin that secrete an oily substance. They are found throughout the body except on the palms and soles, and are most abundant on the face and scalp.
Step 2: Function of sebaceous glands.
Sebaceous glands secrete an oily substance called sebum. Sebum serves multiple important functions:
Lubricates and moisturizes the skin and hair
Forms a protective layer to prevent excessive water loss
Has antibacterial properties that help protect against infections
Keeps skin flexible and prevents cracking
Step 3: Analysis of each option.

(A) Sebum: Correct. Sebum is the oily, waxy substance produced by the sebaceous glands.
(B) Urine: Incorrect. Urine is produced by the kidneys and excreted through the urinary system, not by oil glands.
(C) Blood: Incorrect. Blood is produced in the bone marrow and circulated through the cardiovascular system, not secreted by oil glands.
(D) Sweat: Incorrect. Sweat is produced by sweat glands (sudoriferous glands), which are different from oil glands. Sweat helps regulate body temperature.
Step 4: Distinction between skin glands.
The skin contains two main types of glands:
Sebaceous glands: Secrete sebum (oily substance)
Sudoriferous glands: Secrete sweat (watery substance)

Final Answer: (A) Sebum.