click below
click below
Normal Size Small Size show me how
ch5 dr jolley
chapter 5
Question | Answer |
---|---|
Integumentary system | Consists of skin |
many different tissues | make it an organ |
Skin has how many layers | two layers |
What are the name or the layers | Epidermis and dermis |
Epidermis | Outer layer |
Stratum germinativum | innermost layer |
Stratum corneum | horny hard outermost layer |
Langerhans cells | phagocytize foreign material |
melanocytes | produce pigment protein melanin |
Dermis | inner layer |
papillary layer | uneven junction between dermis and epidermis |
Nail follicles | fingernails and toenails |
receptors | provide info about the environment to the CNS |
Glands | within the dermis, but made of epithelial tissue |
ceruminous | in the ear canal, outitory canal |
Sweat | has two types apocrine and eccrine |
Apocrine | axilla and pubic areas |
Eccrine | most abundant on face, palms, and soles |
Aterioles | small arteries |
Vasodilation | increase blood flow to surface |
Vasoconstriction | decrease blood flow to surface |
Subcutaneous tissue | connective tissue membrane |
Functions of Subcutaneous tissue | connects skin to muscle, provides immunity from WBC's |
Aging how it happens | decreases fibroblastic activity, glands become less active, hair follicles die |