unit 4 Intergumentary system

Organs 

body  structures composed of two or more different tissues 

Integumentary system

The skin and its accessory organs make up the..

Functions of the skin

Maintaining Homeostasis, temp regulation, water loss, vitamin D

Outer Epidermis

Avascular kerainized stratified, squamous epithelium

Dermis

Connective tissue, blood vessels and nervous tissue

Sebaceous glands 

associated with hair follicles and secreate sebum that waterproofs and moisturized the hair shaft and skin 

Sweat glands

sudorifeerous glands,

Subcutaneous layer

Hypodermics or areolar and adipose tissue, insulates body heat

Epidermis

is made up of stratified squamous epithelium and lacks blood vessels

Keratinized

Cells are pushed outward as new cells are formed and become.. as they die

Melanin 

pigment in the skin

Well oxygenated blood give a

pink color

poorly oxygenated blood give

cyanosis

Nails 

protective coverings over the ends of fingers and toes, consist of a nail plate, stratified and squamous epithelial cells overlying the nail bed

Hair follicle / hair root

devolves from epithelial stem cells at the base of a tube like depression / dermis pushes from the..

Dark hair has

Eumelnin

blond an red hair color have 

pheomelanin 

Arrector pili muscle

A bundle of smooth muscle cells. Attached to each hair folocule, goose bumps

Eccrine 

responded by body temp 

Apocrine

Active during puberty and is responded by boddy temp, sexual arousal

Ceruminous glands

modified sweat glands, wax in the ear

Mammary glands 

modified sweat glands, secretes milks 

Hypothermia

core body temp bellow 95f

Hypertherima 

core body temp over 106f

Granulations

large wounds leave scares and healing may be accompanied by the formitanon of..