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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 |