Homeostasis Flashcards
Homoios means?
Like
Stasis means?
Standing still
Who coined the term in homeostasis?
Walter cannon
Defined as the self regulatory capacity to maintain steady states in the body, essential for. Keeping the individual alive despite of changes in the external environment
Homeostasis
It is the fluid that surrounds the cells
Internal environment
What is considered as internal environment?
Extracellular fluid
Extracellular fluid has two components:
Plasma and interstitial fluid
A biological occurrence wherein the output of a system amplifies the system (positive) or inhibits the system(negative feedback).
Feedback loop
Negative or positive feedback?
Maintaining the blood glucose levels
Negative
Series of changes that returns the variable within its normal range by a negative response / resist or reverse the process
Negative feedback mechanism
Negative or positive feedback?
Body temperature
Negative
It encourages and intensifies a change in the body’s physiological condition, actually driving it farther out of its normal range
Positive feedback mechanism
Negative or positive feedback?
Childbirth
Positive
Negative or positive feedback?
Blood clotting
Positive
Kept within the certain range, sensed by a sensor
Regulated variable
Measures the value of regulated variable
Sensor
Control the output of effector response
Control center
Generates the effector response
Effector
Manipulated to achieve regulation of regulated variable
Controlled variable
Permit the body to predict a change in the physiology of the organism and initiate a response that can reduce the movement of a regulated variable out of its normal range
Feedforward mechanism
