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Integumentary System
| Term | Definition |
|---|---|
| How does dermatology relate to the Integumentary system | it studies, diagnoses and treats conditions affecting the system |
| What is the largest organ in the body | the skin |
| What is the cutaneous membrane | Skin. Protective covering for the body |
| Structure of Epidermis | made of stratified squamous epithelial tissue. Includes melanocyes |
| Structure of Dermis | made of connective tissue. Includes hair follicles, nerve endings |
| Structure of Subcutaneous layer | loose connective tissue and fat |
| 3 functions of the skin | protection, absorbtion, temp regulation |
| Function of Epidermis | Protection, prevents water loss, |
| Function of Dermis | provides strength and elasticity which gives support. Sensation |
| Function of Subcutaneous layer | insulations and cushioning |
| Describe the arrangements of the different cell layers found in the epidermis | Stratum basale- Bottom Stratum Spinosum Stratum Granulosum Stratum lucidum Stratum Corneum- Top |
| Why is melanin important | It protects us from uv radiation |
| why do some people have darker hair if we all have the same number of melanocytes | They have more active melanocytes |
| What colors can skin be | Shades of brown. The melanocytes produce more melanin |
| What is the function of the Arretor pili muscle | a smooth muscle attached to the hair follicle. Pulls hair upright causing goosebumps |
| What is the difference between the two types of sweat glands. Where can they be found | Eccrine: most numerous, found all over the body. produce sweat to help regulate temp and secrete small waste Apocrine: hairy areas often the cause of body odor |
| What is keratinization | Skin cells die and produce a hard strong waterproof protection |
| Where can you find Keratin | nails, hair |
| List 3 sites of dead epidermal cells | stratum Corneum-, hair, nails |
| What are sebaceous glands and how does age effect their activity | oil producing glands. Children less active. Teens most active. Adults gland activity decreases |
| Describe the different parts of a nails | Nail plate, nail bed, lunula, cuticle nail folds |
| Why is regulating body temp important |