click below
click below
Normal Size Small Size show me how
Integumentary System
A&P chpt 5
| Term | Definition |
|---|---|
| integumentary system | glands, hair, nails & other stuctures |
| skin | AKA cutaneous membrane |
| epidermis | outer layer |
| epidermis | stratified squamous epithelium, no blood vessels present, receives nutrients by diffusion |
| keratin | hard, fibrous protein, water repellant |
| dermis | AKA stratum corium |
| dermis | dense connective tissue that is deeper & usually thicker |
| dermis | inner layer |
| sensory receptors | specialized endings in the nerves, defect changes in the environment such as heat, cold, pain, pressure & touch |
| subcutaneous | not actually a part of the skin, loosely anchors the skin to underlying organs |
| subcutaneous | consists largely of loose connective tissue & adipose tissue |
| subcutaneous | AKA hypodermis or superficial fascia |
| skin color | result of many factors, some genetic, physiologic & environmental |
| melanin | basic skin color is caused by this dark pigment |
| melanin | produced by the melanocytes in the stratum basale of the epidermis |
| albinism | individuals have light skin, no melanin |
| carotene | yellowish pigment |
| pinkish tint | in the skin, attributable to the blood vessels in the dermis |
| nails | thin plates of dead skin |
| hair | found on nearly all body surfaces |
| hair follicle | has a bundle of smooth muscle attached with it |
| sebaceous glands | hair, secretes sebum |
| sudoriferous glands | sweat glands |
| merocrine | sweat pore, perspiration |
| apocrine | axillae, body oder |
| merocrine & apocrine | sudoriferous glands |
| ceruminous glands | found in ear canal |
| ceruminous glands | secretes cerumen (earwax) |
| ceruminous glands | modified sweat glands |
| functions of the skin | protection, sensory reception, regulation of body temp, synthesis of vitamin D |