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A&P Part 1 > Homeostasis > Flashcards

Flashcards in Homeostasis Deck (12)
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1
Q

homeostasis

A

body’s ability to maintain internal stability

2
Q

three components of homeostasis

A

receptor, control center, effector

3
Q

receptor

A

monitors the environment and responds to stimuli by sending info to #2 through the afferent pathway

4
Q

control center

A

determines the level of response from the input it received and sends the instructions to #3 along the efferent pathway

5
Q

effector

A

receives the directions from #2 and carries out the response

6
Q

afferent pathway

A

communication pathway between receptor and control center

7
Q

efferent pathway

A

communication pathway between control center and effector

8
Q

negative feedback mechanism

A

the output (result of action) shuts off or reduces the intensity of the original effect

the direction of change is opposite of the initial change.

9
Q

positive feedback mechanism

A

the output (result of action) enhances the original stimulus

the direction of change is the same as the initial change

10
Q

homeostasis imbalance

A

the disturbance of homeostasis; often leads to disease

11
Q

autoregulation/intrinsic

A

an auto response in the cell, tissue, etc.

12
Q

extrinsic

A

responses are controlled by the nervous and endocrine systems