homeostatsis Flashcards
Homeostasis
The concept of maintaining a relatively stable internal environment
Explain Internal environment
Refers primarily to the composition of interstitial flui
- Resp system bring O2 to the cell and removes CO2
DIG brings glucose to the cell
The circulation of blood brings nutrients to the cells and removes waste products
State all the controlled conditions
Temp/ Waterbalance/ Electrolyte balance/ Blood ph/ Blood glucose level/ BP
Define Homeostatic control mechanisms
INternal communication between nervous system and endocrine system
- Ngeative and positive feedback mech
Describe the process of homeostatic control mechanisms
Receptors-input
control centre- output
effector- response
Define Negative feedback mechanisms
Control centre is wanting to reverse the change in the controlled condition
Baroreceptors
sensitive to stretch or pressure on the arterial system (BP)
Chemoreceptor- glucoreceptor
receptors that are sensitive to a change in the glucose within the blood
Osmoreceptor
The amount of fluid within the blood. primary found in hypothalamus
Thermoreceptor
sensitive to change in body
Receptors location
nervous system
Control centre location
hypothalamus and brain
Effector location
muscles and glands
Positive Feedback
change in the controlled condition is increased or intensified until the end result is reached and feedback loop is terminated
Describe factors in Thermoreceptors in the skim
Thermo receptors-skin to hypothalamus to muscles glands and blood vessels
