integumentary system

Question 1

State the function of adipose (fat) tissue in the subcutaneous layer

Answer 1

Insulation - against heat loss
protection - against knocks/bumps
Storage - of chemical energy

Question 2

function of the sweat glands

Answer 2

when body temp increases, nerve impulses from the brain stimulate sweat glands. evaporation of sweat helps lower body temp and helps eliminate waste such as urea

Question 3

function of the sensory receptors

Answer 3

detect touch, pressure, vibration, tickle, heat, cold and pain. connected to the nerves

Question 4

function of sebaceous glands

Answer 4

Produces oily secretion - sebrum
Moistens hair, waterproofs and softens the skin

Question 5

Dermal arterioles

Answer 5

effectors in thermoregulation
constrict to help conserve heat
Dilate to release heat

Question 6

Arrector pili muscles function

Answer 6

smooth muscle in dermis contracts with cold or fear
forms goosebumps as hair is pulled up vertically

Question 7

name the 6 functions of the skin

Answer 7

Protect
sensation
excretion
synthesis of vitamin D
Blood reservoir
Regulates body temperature

Question 8

What are the four functions of the normal microbial flora of the skin

Answer 8

Lower pH of the skin
Excrete chemicals with antibacterial activity
compete for space/nutrients to prevent growth of pathogens and transients
compete for bacterial receptors on surface
Stimulate immune response to fight pathogens

Question 9

Name some common bacterial infections of the skin

Answer 9

Gas gangrene
STS - staphylococcal toxic shock syndrome

Question 10

Name some common fungal infections of the skin

Answer 10

Athletes foot - Tinea pedis
Ringworm - Tinea corporis