Homeostasis Flashcards
an initial stimulus produces a response that exaggerates or enhances the original change in conditions, rather than opposing it. tends to produce extreme responses
positive feedback
occurs when a cell, tissue, organ, or organ system adjusts its activities automatically in response to some environmental change
autoregulation
results from the activities of the nervous system or endocrine system
extrinsic regulation
a corrective mechanism involving an action that directly opposes a variation from normal limits
negative feedback
Failure of homeostatic regulation in the body results in?
disease
The increasingly forceful labor contractions during childbirth are an example of
positive feedback
a sensor that is sensitive to a particular stimulus or environmental change
receptor
receives and processes the information supplied by the receptor and sends out commands
control center
cell or organ that responds to the commands of the control center and whose activity either opposes or enhances the stimulus
effector
which of the following is not an example of negative feedback?
a rise in estrogen during the menstrual cycle increases the number of progesterone receptors in the uterus
