19 terms

Homeostasis (for Final Dec2015)

This set of terms supports learning in grade 10 MYP unit - Homeostasis
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Terms in this set (...)

homeostasis
maintaining a constant internal environment
negative feedback
movement away from an ideal state triggers a mechanism to counteract further change and returns the state to normal;
a change in a variable triggers mechanisms that reverse that change
cells
building blocks of all living things;
smallest unit of life
tissues
groups of cells with a common structure and function
organs
group of tissues that work together to perform closely related functions
organ systems
A group of organs that work together in performing important body functions
organism
any living thing
equilibrium
state of balance
fluctuation
frequent and irregular change
mechanism
a system of parts working together to perform a function
thermoregulation
control of body temperature
metabolism
all the chemical reactions in living organisms that are necessary to maintain life
regulate
to control or direct by some particular method
thermostat
a device used to control the temperature
stimulus
a change in environment that causes an organism to react
effector
an organ or cell that acts in response to a stimulus
response
an action or change in behavior that occurs as a result of a stimulus
set point
the point at which an individual's "normal" level is set for a variable
receptor
a sensor that responds to a change in the environment

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