Integumentary

Home

Get App

Create

function

barrier
function as barrier
- keeps h2o in
- prevents entrance of foreigners
- makes vitamin D
- prevents DNA damage from UV radiation
- prevents the spread of invaders once inside
- sensory: detects conditions on/around body
- temperature regulation
- excretion
steps of inflamatorys
- broken cell releases histamine
- other cells swell up
- sphincter entering blood vessel opens & end closes
- histamine trail is released
h2o enters for swelling
- seals hole
- prevents spreading of invader
blood vessel entering area to swell
- sphincter opens
- brings lots of white blood cells to area to kill
- suger & oxygen for energy
sphincter end closes
- prevents spread of invaders
- slows blood down so nutrients & white blood cells can enter wound area
histamine trail
- white blood cells follow trail
- movement is efficient by histamine
- damage to cells
- allergens
symptoms of over heating
- red
- sweat
- stop sweating
- faint
- throw up
- mixed temperature response
steps of cooling body down
- 1. hot blood stimulates hypothalamus
- 2. nerve impulse is released from hypothalamus
- 3. capillary in blood vessel gets bigger & lets out more heat
- 4. sweat gland releases water from sweat gland & sweat is evaporated into hair causing cooling effect
- 5. cooler blood enters the brain
danger of overheating

breaks down all proteins & enzymes --> no chemical reaction --> death
cause of fever
- parasites
- one celled destroys enzymes in host & infector
- loss to you is nothing compared to benefit
symptoms of cold
- shivering
- muscle tense
- pale blue
- chicken skin=hairs stand up
- lips get blue
steps of getting cold
- blood vessel shrinks
- white fatty tissue becomes visible
- arrector pilimuscle makes hairs stand up (vestigial)
healing of superficial wounds
- basale cells migrate to opening then multiply causing skin to form (mitosis)
- changed keratinization & multiplying increases
- scar tissue is less flexible & thincker
healing of deep wounds
- plugging
- bleeding
healing of deep wounds:plugging
- 1. cells cut open --> chemicals for healing
- 2. basale cells migrate --> multiply & fill inside (deep) to outside (superficial)
healing of deep wounds: bleeding
- 1. blood leaves blood vessel
- 2. chemical reactions occur, platelets get stickier & fibers from two trapped blood cells- clots (himatoma)
- 3. macrophages & neurothils- migrate out & digest fibers --> digest red blood cell
- --biliverdin: black
- -- WBC digests biliverdin: yellow
- -- WBC digests the rest & biliverdin goes to liver

Author

ht2lvu

46957

Card Set

Integumentary

Description

Skin

Updated

2010-11-03T06:08:44Z

Show Answers