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Integumentary System
SKIN
| Question | Answer |
|---|---|
| What are the parts of the integumentary system? | Skin, hair, nails, sweat glands, and sebaceous glands |
| What are the three layers of skin? | Epidermis, dermis, and subcutaneous layer |
| What is a 1st degree burn? | Skin reddened and painful; no blisters; epidermis is damaged |
| What is a 2nd degree burn? | Skin reddened and painful; both epidermis and dermis are damaged |
| What is a 3rd degree burn? | Charred; epidermis and dermis are burned away; subcutaneous layer is exposed |
| What are the functions of the integumentary system? | Two-way protective barrier, temperature regulation, houses sensory receptors, and secretes important fluids |
| What is the largest organ in the body, and how much does it weigh? | Skin, and more than 20 lbs (in adults) |
| Skin is also called...? | Integument, and Cutaneous membrane |
| Sensory receptors are located in...? | Middle layer - Dermis |
| What do sensory receptors detect? | Temperature, pain, touch, and pressure |
| Sweat glands...? | 1) Assists body in maintaining internal temperature 2) Create cooling effect when sweat evaporates |
| Sebaceous glands...? | 1) Oil glands 2) Produce sebum 3) Lubricates the skin surface |
| Temperature regulation 1 To cool skin...? | 1) Sweat evaporation 2) Dilate superficial blood vessels to release heat |
| Temperature regulation 2 To conserve heat...? | 1) Constrict superficial blood vessels to keep warm blood away from surface 2)Continuous fat layer acts as insulation |
| Epidermis | Thin outer membrane layer, and composed of stratified squamos epithelium |
| Dermis | Middle, fibrous connective tissue layer, and composed of collagen fibers (also known as "corium") |
| Subcutaneous Layer | Innermost layer of fatty tissue and fat cells called lipocytes (also known as "fascia" or "hypodermis") |
| What is the Basal layer? | The deepest layer of the epidermis |
| What are Melanocytes? | Special cells or basal layer, and produce black pigment melanin |
| What do Melanocytes do? | 1) Protects against UV rays from the sun 2) Gives skin its color |
| Hair is made up of...? | Hair follicle, hair root, hair shaft, arrector pili muscle |
| What is the arrector pili? | 1) Slip of smooth muscle 2) Causes hairs to "stand up" |
| Nails are made up of...? | Nail body (flat bed of keratin), nail bed (connects nail body to underlying tissue), and lunula (half-moon white area at base of nail) |
Created by:
studycat057
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