Week 1-Homeostasis Flashcards
Define Homeostasis
The maintenance of relatively stable conditions in the body’s internal environment
Define Receptor
A body structure that monitors changes in a controlled condition and sends input to a control centre.
Define Control Centre
The brain sets point within which a controlled condition should be maintained and evaluates the input it receives from receptors.
Define Effector
A body structure that receives output from the control centre and produces a response or effect that changes the controlled condition.
Define Afferent Pathway
the process of communication that carries sensory information from receptors to the brain
Define Efferent Pathway
The process of communication that carries signals from the brain to the effectors
Define Negative Feedback System
A process where the body reverses the change back to a set point
Define Positive Feedback System
A process where the body amplifies a trend to move away from a set point
Define Mechanoreceptors
A sensory cell that responds to mechanical stimuli such as touch or sound.
Define Thermoreceptors
A sensory cell that detect changes in temperature
Define Chemoreceptors
A sensory cell responsive to chemical stimuli such as taste buds
Define Baroreceptors
A sensory cell responsive to changes in blood pressure
Define Osmoreceptors
A sensory cell that detect changes in the body’s osmotic pressure and help regulate water balance
Name 4 types of Thermoregulation
Conduction
Convection
Radiation
Evaporation
Define Conduction
The transfer of heat by two objects that are in direct contact with one another, e.g. body to chair
