HOMEOSTASISKeeping your body stable

Homeostasis

Review of the processRefers to all activities in your body designed

to keep your body within a constant internal range

Examples

Some ways you maintain homeostasisBody temperature

○ Must remain close to 98.6 FGlucose levels

○ If too high or too low, can cause coma or death

Pathogen free○ Keep all disease-causing agents out of your

body

Systems involved

All systems really involved Systems to be reviewed in this unit:

IntegumentaryImmuneLymphaticExcretory

Integumentary System

Your body’s coveringsIncludes

○ all layers of your skin○ Hair follicles, hair○ nails

Immune System

Keeps you free of diseaseWhite blood cellsBone marrow

All designed to kill anything that is not recognized as being a part of you or is recognized as being bad for you

Lymphatic System

Prevents buildup of fluids from collecting in tissues

Produce antibodies to act against pathogens

Excretory System

Monitors fluid levels in blood stream Removes any nitrogenous waste and

excess water from blood stream

Disruptions of Homeostasis

Burns Diabetes

Burns

Degrees1st- usually mild, with redness on skin2nd- bubbling of skin3rd- complete peeling/removal of skin

Anytime damage done to skin, becomes nearly impossible to prevent pathogens from entering and water from leavingAlso makes thermoregulation VERY difficult

Diabetes

Type 1- body cannot make insulin Type 2- body cannot recognize insulin’s

signal and follow its instructions

Body does not have the ability to react to changes in blood sugar levelsCan result in rapid death if not managed

properly