3 - The skin, hair and nails Flashcards
Major Functions of the skin
Heat regulation, sensation, protection, excretion, secretion, synthesis of vitamin d
Minor functions of the skin
Immunity, blood reservoir communication
What does dermatology mean?
The study of the skin
What is skin?
Cutaneous membrane. 1: epidermis layer. 2:dermis layer.
How many sub layers is the epidermis layer made of?
5
How many sun layers is the dermis layer made of ?
2
Names of the 2 dermis layers
Papillary layer ; nipple shaped projections
Reticular layer; varying thickness of the skin
Name the 5 layers of the epidermis layer ?
Stratum ….
Stratum Corneum Stratum lucidum Stratum granulosm Stratum spinosum Stratum basale
Lanugo
Soft hair ; found in foetus 3rd to 8th month
Vellus hair type
Soft and downy; everywhere on the body except eyelid, palm of hands, lips and nipples
Terminal hair type
Long, coarse ; found on head, eyebrows, eyelashes, armpits and Punic area
Germinal Matrix
Nail bed
Cuticle
Eponychium
Nail plate
Free edge
Nail groove
Nail mantle
Lunula
Hyponychium
Nail wall
Sebaceous gland is?
Secretes sebum aka oily glands. Acts as Lubricant for hair and skin
Sudoriferous glands
Excrete sweat onto the surface of the skin.