What is the functions for the following:
Stratum corneum
Stratum Germinnativum
Keratin
Papilla
Sudoriferous Gland
Sebaceous Gland
Arrector Pili
1) Stratum corneum: The function of the stratum corneum is to protect the underlying layers of the skin from environmental damage, including UV radiation, pathogens, and chemicals. It acts as a barrier preventing excessive water loss and maintains skin hydration.
2) Stratum Germinnativum: The stratum germinativum, also known as the basal cell layer, is responsible for the growth and regeneration of the epidermis. It contains stem cells that continuously divide and differentiate, producing new skin cells and replacing old, damaged ones.
3) Keratin: Keratin is a protein that makes up the structural framework of the epithelial cells in the skin, hair, and nails. Its function is to provide strength, rigidity, and protection to these structures.
4) Papilla: In the context of hair, a papilla refers to a small, round structure at the base of the hair follicle. It plays a crucial role in hair growth by supplying nutrients and oxygen to the hair follicle cells.
5) Sudoriferous Gland: Sudoriferous glands, also known as sweat glands, produce sweat to regulate body temperature and excrete waste products. They are responsible for cooling the body during activities or in warm environments.
6) Sebaceous Gland: Sebaceous glands are small, oil-producing glands found throughout the skin. Their main function is to secrete sebum, an oily substance that lubricates and waterproofs the skin and hair, preventing them from drying out.
7) Arrector Pili: Arrector pili muscles are tiny, involuntary muscles attached to hair follicles. Their contraction causes the hair to stand up, resulting in the formation of "goosebumps." The function of these muscles is believed to be related to thermoregulation in animals and expressing emotional states such as fear or excitement in humans.