Day 2 Notes

Question 1

Functions of skin

Answer 1

Protection, prevent water loss, sensory receptors excrete waste, prodce vitamin D, regulate body temp

Question 2

Regulations of body temp

Answer 2

Monitored by hypothalamus; 98.6⁰F(37⁰C)

Question 3

Most active cells

Answer 3

Create heat: skeletal, cardiac, cells of liver

Question 4

Body too warm

Answer 4

Respond with vasodilation

Question 5

4 methods of heat loss

Answer 5

Radiation
Conduction
Covection
Evaporation

Question 6

Radiation heat loss

Answer 6

Infrared heat rays escape

Question 7

Conduction heat loss

Answer 7

Heat moves from skin to cooler objects

Question 8

Covection heat loss

Answer 8

Heat loss into circulating air currents

Question 9

Evaporation

Answer 9

Sweat changes into gas

Question 10

Temp rises

Answer 10

Thermoreceptors signal hypothalamus

Vasodilation; sweat activated

Question 11

Temp lowers

Answer 11

Thermoreceptos signal hypothalamus

Vasoconstriction; turn off sweat, unvoluntary muscle contration(shiver)

Question 12

Hyperthermia

Answer 12

Abnormal high temp(gain heat)
Environment is hot(radiation is less effective)
Skin becomes dry, weak, nauseous, rapid pulse

Question 13

Hypothermia

Answer 13

Abnotmally low temp( absorb cold)
Exposed to cold for too long
Confussion and loss of reflexes
No treatment=organ shut down

Question 14

Inflammation

Answer 14

Normal response to injury or stress

Skin may become: redden, swollen, warm, painful

Question 15

Type of cuts

Answer 15

Deep

Shallow

Question 16

Type of cuts

Answer 16

Deep

Shallow

Question 17

Shallow cut

Answer 17

Affects only epidermis

Question 18

Deep cut

Answer 18

Reachs the dermis, or subcutaneous layer

Question 19

1st step to heal wound

Answer 19

Wound created, bleed occurs

Question 20

2nd step to heal

Answer 20

Blood cloth is formed from fibrin

Question 21

3rd step to heal

Answer 21

Cells reproduce and fill wound
Fibroblast-scecrete collagen fibers
Phagocytic-cells remove debris

Question 22

4th step to heal(final)

Answer 22

Stimulate new tissue formation
Excess collagen forms a scar
Blood cloth- dried tissue becomes a scab

Question 23

Types of burns

Answer 23

Superficial, partial thickness(first degre) burn
Deep, partial thickness(second degree) burn
Full thickness(third degree) burn

Question 24

Superficial(1st degree) burn

Answer 24

Injures epidermis(sun burns)
Healing takes days-weeks, no scars

Question 25

Deep(2nd degree) burn

Answer 25

Destroy epidermis May blister, healing varies Cells in follicles and gland help regenerate; No scarring

Question 26

Full thickness(3rd degree) burn

Answer 26

Destroy epidernis and skin accesory Prolonged exposure to heat, flames, hot water Often requires skin graft, skin substitutes

Question 27

Rules of nine

Answer 27

Divides region into 9%