Chapter 4 Skin and Body Membranes part 2 Flashcards
(49 cards)
What 2 things lie abundantly in the dermis
Nerve supply and blood vessels
What is the upper dermal region called
Papillary layer
What is the dermal papillae
It is uneven and has peglike projections from its superior surface
What is the deepest layer of skin called
Reticular layer
What does the reticular layer contain
Irregularly arranged connective tissue fibers and blood vessels
What 2 fibers are found in the dermis
Collagen and elastic fibers
What is collagen responsible for
The toughness of the dermis
What does the elastic fibers give the skin? When?
Gives the skin elasticity while being young
What are decubitus ulcers
Occur in bedridden patients who aren’t turned regularly and/or dragged across the bed repeatedly
What is another name for cutaneous glands
Exocrine Gland
What do Cutaneous glands do
Release secretions through ducts to the skin surface
What is the Sebaceous gland
Produces oil and ducts that empty into hair follicles
What is sebum
Oil produced by the sebaceous gland
What is another name for the sweat glands
Sudoriferous gland
What are the 2 types of sweat glands
Eccrine and apocrine
What is eccrine
Duct open to the surface of the skin
What is the apocrine
Duct dumps into the hair follicle
What is sweat composed of
Water, vitamin c, some salts
What are the 3 functions of sweat
Helps dissipate heat, inhibits bacterial growth, excretes waste products
What are the 2 parts of the hair
root and shaft
What is hair produced by
Hair bump matrix
What is hair made of
Hard keratinized epithelial cells
What provides hair color
Melanocytes
What is the medulla
Central core of a hair
