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A+P Tissue
Integumentary System Semester Review
| Question | Answer |
|---|---|
| What are the three layers of skin? | epidermis dermis subcutaneous layer |
| Is the epidermis the outer, middle, or inner layer? | outer |
| Is the dermis the outer, middle, or inner layer? | middle |
| Is the subcutaneous layer the outer, middle, or inner layer? | inner |
| What are the 5 functions of the skin? | protection excretion temperature regulation cutaneous sensation vitamin D synthesis |
| What are the three types of protection the skin provides? | chemical physical biological |
| What does each of the three types of protection your skin provides do? | chemical- prevents bacteria on skin surface physical- large numbers of layers preventing bacteria biological- destroy bacteria and other invading substances |
| Why does the skin use excretion? | remove waste materials (sweating) |
| What does the skins temperature regulation do? | regulates body temperature and heat |
| What are three ways the skin uses temperature regulation? | sweating by the sweat glands vascoconstriction by the arteries - skin turns paler vasodilation by arteries - skin turns red |
| What is cutaneous sensation? | nerve receptors detect sensations allowing body to be aware |
| What is vitamin D synthesis? Why is it important? | activates a series of chemical reactions allows for the absorption of calcium |
| What parts of the body have a 5th layer of skin, and what is it called? | palms and soles of feet stratum lucidum |
| Which layers in the skin are alive and which are dead? | top/seen layers are dead bottom/unseen layers are alive |
| Why does skin die? | depends on the distance they are away from nutrients and the blood supply |
| Where are keratinocytes and what do they do? | stratum granulosum and stratum corneum make the skin tough and waterproof |
| Where are melanocytes and what do they do? | stratum base layer produce melanin |
| What are the 5 accessory organs of the dermis? | sebaceous gland sweat gland nails hair arrector pili |
| Describe hair, and what it does | produced by epithelial cells at the hair papilla insulate body temp and heat blocks dirt and sun |
| What is an arrector pili muscle and what does it do? | make of skeletal muscle and under involuntary control wrinkles skin and makes hair stand up |
| What do sebaceous glands produce and what does this substance do? | secretes oil prevents bacterial growth, helps waterproof skin and hair |
| What are the three types of burns, and how are they different | first- superficial- heals in a week second- skin may get infection- heals in a couple weeks third- may be life threatening |
| What layer is damaged in a first degree burn? | epidermis |
| What layer is damaged in a second degree burn? | epidermis and dermis |
| What layer is damaged in a third degree burn? | epidermis, dermis, and subcutaneous |
| What are symptoms of a first degree burn? | skin red and dry |
| What are symptoms of a second degree burn? | pain swelling redness blistering |
| What are symptoms of a third degree burn? | loss of skin blackened skin |
| Whats the difference between the three main types of skin cancer? | basal cell carcinoma- most common squamous cell carcinoma- second most common melanoma- most dangerous |
| Which skin cancer is most dangerous and why? | melanoma- most likely to spread because of close proximity to blood vessels |
| What cells do basal cell carcinoma affect? | basal layer of the epidermis |
| What cells do squamous cell carcinoma affect? | squamous cells above the basal layer |
| What cells do melanoma affect? | all over the body out of control |
Created by:
ericak12
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