Question

describe the structure and growth of hair by determining which of the following statements are \true\ and which are \false\. hair follicle cells are found in a structure called the hair matrix. follicles are formed from dermal cells but are located in the epidermis of the skin. the portion that extends beyond the skin is called the root. as the hair grows up and out of the follicle it becomes keratinized, and dies. the portion of a hair within the follicle is called the shaft. hairs project from complex structures called hair follicles.

Explanation:

1. Hair follicle cells are found in the hair matrix. This is true as the hair matrix is the actively - dividing part of the hair follicle where cells are located.
2. Follicles are formed from epidermal cells that invaginate into the dermis, not from dermal cells located in the epidermis. So this is false.
3. The portion that extends beyond the skin is called the shaft, not the root. The root is the part within the skin. So this is false.
4. As hair grows up and out of the follicle, it becomes keratinized and the cells die. This is true as the process of keratinization occurs as hair moves towards the surface.
5. The portion of a hair within the follicle is called the root, not the shaft. The shaft is the part outside the skin. So this is false.
6. Hairs project from hair follicles which are complex structures. This is true.

Answer:

TRUE: Hair follicle cells are found in a structure called the hair matrix; As the hair grows up and out of the follicle it becomes keratinized, and dies; Hairs project from complex structures called hair follicles.
FALSE: Follicles are formed from dermal cells but are located in the epidermis of the skin; The portion that extends beyond the skin is called the root; The portion of a hair within the follicle is called the shaft.