What is the structure of a hair follicle?

A hair follicle is a stocking-like structure that contains cells and connective tissue and surrounds the root of a hair. It exists within the dermis and the epidermis, the two top layers of the skin. For a helpful visual, think of the hair follicle as a vase and the hair as the stem of a flower.

What are the three main structures of the hair follicle?

The hair follicle can be divided into 3 regions: the lower segment (bulb and suprabulb), the middle segment (isthmus), and the upper segment (infundibulum). The lower segment extends from the base of the follicle to the insertion of the erector pili muscle (also known as the arrector pili muscle).

What is a hair follicle made of?

The hair follicle is made of multiple layers of cells that form from basal cells in the hair matrix and the hair root. Cells of the hair matrix divide and differentiate to form the layers of the hair.

What is hair follicle?

Listen to pronunciation. (… FAH-lih-kul) A shaft or opening on the surface of the skin through which hair grows.

What is the function of hair root?

The main function of root hairs is the uptake of water and nutrients from the rhizosphere.

What is the function of the hair?

In humans, hair has various functions such as protection against external factors, sebum, apocrine sweat and pheromones production and thermoregulation. The hair also plays important roles for the individual’s social and sexual interaction [1, 2].

What cells are in a hair follicle?

Hair follicle stem cells in the epithelial bulge are responsible for the continual regeneration of the hair follicle during cycling. The bulge cells reside in a niche composed of dermal cells. The dermal compartment of the hair follicle consists of the dermal papilla and dermal sheath.

What is the function of hair?

What are the 6 functions of hair?

Functions of Hair

  • Protection.
  • Heat Retention.
  • Facial Expression.
  • Sensory Reception.
  • Visual Identification.
  • Chemical Signal Dispersal.

What is the function of hair shaft?

Mammalian HFs are essential to homeostasis, regulation of body temperature, and the generation of hair shafts for protection against pathogens and physical stimuli. Apart from a protective role, mammalian HFs are a reservoir for various immune cells.

Where is hair follicle located?

epidermis
The hair follicle is a tube-shaped sheath that surrounds the part of the hair that is under the skin and nourishes the hair. It is located in the epidermis and the dermis. The hair shaft is the part of the hair that is above the skin.