The Big Picture

describe the relationship between structure and function that was discussed

structure can change based on functional needs, change occurs to maintain normal function

how is function maintained in the body?

homeostasis

receptor

structure that is tasked with regulating

control center

recieves input form the receptor, determines appropriate response

effector

recieves output from control center and produces response to maintain range of normal

negative feedback

resulting action is in the opposite direction of the stimulus (ex: BP regulation)

Name the stimulus, response and effect in this scenario: dog takes a nap in the sun and the surface temperature begins to rise

Stimulus -application of heat from sun, Response - skin blood vessels dilate, Effect- decreased temperature

Name the stimulus, response and effect in this scenario: loud noise results in cat leaping off of countertop

Stimulus -Increased blood pressure (initial stimulus was sound that resulted in sympathetic response and movement away from set point), Response - blood vessels dilate and heart rate slows, Effect- decreased blood pressure