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BIO101 Ch 5 Skin
| Question | Answer |
|---|---|
| Projections of loose connective tissue from the dermis, which extend upward between the adjacent ridges of the epidermis, are called ________. | dermal papillae |
| Where is thick skin found? | Palms of hands and soles of feet |
| The skin is what type of membrane | Cutaneous (epithelial) |
| Epidermal cells are supplied with nutrients from blood vessels in the | Dermis |
| What is the function of the combination of epidermal ridges and dermal papillae? | increase surface area for diffusion between the dermis and epidermis |
| What cell is responsible for pigment production in the skin? | Melanocyte |
| What makes up the majority of hair and nails? | keratin |
| What protein is responsible for pigmentation in the skin? | Melanin |
| What is the medical term for a sweat gland? | Sudoriferous gland |
| What is missing in albinism? | Melanin |
| What layer of skin differentiates thin skin from thick skin? | Epidermis |
| What does UV radiation stimulate the production of in the skin? | Vitamin D3 |
| What does melanin serves to protect cells from in the deeper layers of the epidermis? | UV (ultraviolet) radiation |
| The dermis is composed largely of ________. | dense irregular connective |
| What is the most common type of skin cancer? | Basal cell carcinoma |
| What is the function of the nerve fiber attached to the hair follicle? | For early warning for possible danger |
| When the body is over heated what happens in the skin? | blood vessels dialate |
| What muscle causes the hair on the skin to rise (goosebumps)? | arrector pili muscles |
| The pale crescent area of the nail is called the | lunula |
| What is the function of melanin? | Protects against UV damage |
| A thickened area of scar tissue that is covered by a shiny, smooth epidermal surface is called a(n) | keloid |
| During skin repair, most of the scab consists of an insoluble network of ________, a protein that forms from blood proteins during the clotting response | granulation tissue |
| A "rug burn," which scrapes the skin, is an example of a(n) | abrasion |
| The study of tissues is called | histology |
| secretions are discharged onto some external or internal body surface through | a duct |
| What accounts for most of the volume of connective tissues | extracellular matrix |
Created by:
DrGreimel