Which of the following is not a type of hair

Which of the following is not a type of hair?

Which of the following is not a type of hair?

Multiple Choice

A. Lanugo

B. Vellus

C. Keratin

D. Terminal

E. All of these are types of hair

The Correct Answer and Explanation is :

The correct answer is C. Keratin.

Explanation:

Hair types in humans are classified based on their function, location, and texture. The main types of hair are lanugo, vellus, and terminal, each serving distinct roles and characteristics. However, keratin is not a type of hair but rather a protein that makes up hair, nails, and skin.

Here’s a breakdown of the options:

• Lanugo: This is the fine, soft hair that covers a fetus in the womb. It is typically shed before or shortly after birth. Lanugo serves as a protective layer for the developing fetus and helps to maintain body temperature in the absence of fat.
• Vellus: Vellus hair is the fine, short hair that covers most of the body in both children and adults. It is lighter and softer than terminal hair and is often referred to as “peach fuzz.” Vellus hair provides some insulation and protection but does not play a major role in the hair’s function compared to terminal hair.
• Keratin: Keratin is the protein that makes up the structure of hair, skin, and nails. While it is an essential component of hair, it is not classified as a type of hair itself. Rather, it is the structural material from which the hair shaft is made. The hair is composed of a protein called keratin that is produced in hair follicles.
• Terminal: Terminal hair is the thick, coarse hair found on the scalp, underarms, and pubic areas, and it develops after puberty. It is darker and longer than vellus hair, and it is more durable and resistant to breakage.

In summary, keratin is not a type of hair but the key protein that forms hair, making it the correct choice in this question. The other options (lanugo, vellus, and terminal) are all recognized types of hair in humans.