Chapter 11 Flashcards
(28 cards)
Homeostasis
Maintaining a stable internal environment
The integumentary system
The skin
Number one line of defense against pathogens
Skin
Layers of skin
Epidermis
Dermis
Subcutaneous layer (hypodermis)
Flat and irregular
Squamous epithial cells (top layer of epidermis )
Not as flat, still alive
Non reproducing living cells
Bottom layer of epidermis
Germination cells
Psoriasis
Cells reproduce too rapidly
Makes skin cells harder
Keratin (protein)
Skin pigment
Melanin
Thickest, most complex layer of skin
Dermis
Dermis
Elastin and collagen
Lines of tension
Subcutaneous layer
Fatty layer of loose connective tissue
Insulation, shock absorber
Dead keratinized skin cells
Hair shaft
Hair grows the same as
Skin
Sebum
Connected to hair follicle
Sebaceous glands
Sweat ducts lead to
Sweat pores
Hair follicle mites
Demodex
First degree burn
Epidermis damaged
Pain, redness
Second degree burn
Epidermis destroyed
Dermis damaged
Blisters and sores
Third degree burn
Epidermis and dermis destroyed
Skin turns black
May be no pain
Removal of waste from body
Excretion
Brings blood to kidney
Renal artery
Takes clean blood back to heart
Renal vein
