lecture 16 intro to homeostasis Flashcards
what is regaulting metabolic pathways at cellular level importat for
maintaing homeostatis w/in an ogrniams
homeostatsis does not involve keeping conditions _______, it involves keeping conditions what
static;tightly regulated
homeostatis
maintenance of internal balance or a steady state regardless of external environment
what is being reulgated in homeostasis
-body temps
-blood pH
-blood glucose []
general mechanism of homeostasis
homeostasis (set point) -> stimulus (imbalance) -> sensor -> control center -> effector -> homeostasis
example to response to change in homeostasis
making insulin (to lower blood glucose levels)
-come in through facilitated diffusion
sensor in homeostasis mechanism does what
recognizes stimulus is present
example of stimulus imbalance
blood glucose levels increasing
maniting homeostasis requires that an organisms body continuously wjat
monitors its internal environment
each physiological condition has its own what
set point
set point
physiological value around which the normal range fluncuate
what serves as a stimulus
fluncuations above or below the set point
a stimulus is detected by what
a sensor or receptor
where does the sensor report to
to a control center that generates output that triggers a response
negative feedback
usual mechnaism for retutning variable to normal range
