| A | B |
|---|
| cutaneous membrane | What kind of membrane is the skin? |
| hair follicle | tubelike depression in the skin in which a hair develops |
| integumentary | pertaining to the skin and its accessory organs |
| keratinization | the process by which cells form fibrils of keratin and harden |
| mucous membrane | lubricating membrane lining the internal surface or an organ |
| serous membrane | membranes that line body cavities that lack openings to the outside |
| subcutaneous layer | beneath the skin |
| synovial membrane | membrane that forms the inner lining of the capsule of a freely movable joint |
| epidermis | layer of skin without direct nutrient supply |
| dermis | layer of skin where accessory organs are housed |
| subcutaneous layer | layer of skin that binds the skin to underlying organs |
| stratum basale | layer of epidermis where new cells are formed |
| stratum lucidum | epidermis layer that is thickened skin of palms and soles of feet |
| calluses | keratinized areas on palms and soles |
| melanin | pigment produced in epidermis that absorbs UV radiation in sunlight, preventing mutations in the DNA of skin cells and other damaging effects |
| fingerprints | this distinctive feature of the epidermis that is caused by dermal papillae and ridges betwee the dermis and epidermis |
| arrector pili muscle | a bundle of smooth muscle attached to hair follicle |
| sebaceous gland | gland that secretes an oily mixture of fatty material and sebum |
| sebum | cellular debris and fatty material |
| nails | protective covering on ends of fingers and toes |
| lunula | where nail plate has most active growing region |
| sweat glands | sudoriferous glands (exocrine) that are widespread in skin |
| eccrine glands | most numerous sweat glands |
| apocrine glands | sweat glands that become active when a person is emotionally upset, frightened, or in pain |
| mammary glands | modified sweat glands that secrete milk and ear wax (ceruminous) |
| ceruminous glands | modified sweat glands that secrete ear wax |
| The suffix -crine as in exocrine and endocrine, means | to secrete |
