Skin 2 Flashcards
What are the four accessory structures of the skin?
Hair, sweat glands, nails, receptors
Hair is found all over the body except in?
Palms, soles and lips
What is hair made of?
dead keratinised cells
Where is hair/the hair shaft produced in?
Hair follicle
What is hair consisted of?
Arrector pili muscle, sebaceous glands, root hair plexus
This produces contractions that result in goose bumps and improves insulation of the body
Arrector pili muscle
This is a collection of sensory nerves at the base of each hair follicle that causes heightened sensation
Root hair plexus
This produces oily secretion known as sebum. Nourishes hair shaft, moisturises skin and acts as a water repellent.
Sebaceous glands
What leads to acne?
Blocked hair follicles and increased sebum production and infection
This is sheep sebum and may be purified for commercial use in skin care products
Lanolin
What are the 2 sweat glands?
Eccrine and apocrine
What is the fundamental difference between eccrine and apocrine?
Eccrine is closer to the surface of the skin and secretes water secretions directly on skin
Apocrine is deeper to the surface of the skin and secretes oily, sticky and odorous secretions through the hair follicle onto the skin
This sweat glands may be influenced by hormones.
Apocrine
This sweat gland is important in thermoregulation and excretion, and has some antibacterial action.
Eccrine
These protect the finger tips and toes. As well as prevent the temporary deformation of skin when activating receptors
Nails