Organismal Biology: Feedback Mechanisms Flashcards
physiological regulation system in a
living body that works to return the body to its normal internal state,
feedback mechanism
perfect physiological balance
homeostasis.
Homeo means
similar
stasis means
steady
Responses to the changes in the
internal and external
environment.
homeostasis.
Homeostasis is a self-regulating process
by which biological systems
tend to maintain stability
while adjusting to
conditions that are optimal
for _______
survival
Collect the information relative to the
environment and detect the stimulus.
RECEPTORS/SENSORS:
Receives data of stimulus, interprets and process
the message.
CONTROL CENTER:
Delivers messages to target organs via
nerve impulses and hormones.
COMMUNICATION SYSTEM:
Response to changes – organs.
TARGETS/EFFECTORS:
control center and comparator
hypothalamus
Signals can be sent via
nerve pathways and hormones
ENHANCES the original stimulus to
ACCELERATE activity.
positive feedback
A negative feedback mechanisms
DECREASES the intensity of the
stimulus or eliminates it.
Negative
Feedback
Mechanisms
work continuously to maintain
stable conditions in the human body.
Homeostatic mechanisms
when the homeostatic mechanisms fail.
homeostatic
imbalance
