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physiology 1

QuestionAnswer
Form dictates function
Molecules most complex level
Nervous tissue sends and receives info (communication)
All muscles must contract
Epithelial tissue boarder, allowing what can pass over (skin)
Gland secrete molecules
Endocrine hormonal and enters the blood stream (cant affect every cell in the body)
Exocrine release a substance to the exterior of the body or into a cavity (won’t enter the blood stream)
Connective tissue cells very few cells and lots of extracellular materials
connective tissues fat, bone, cartilage, blood, tendons, and ligaments
Homeostasis (most important) - constant internal changes but not big changes
Disease the ability to maintain homeostasis
Negative feedback when the input and the output are opposite
when you get hot, you sweat causing you to cool down
Input heat
Output cool
Body has to be aware of the change sensors
Sends orders to an effector integrating center
Fever your own immune system is causing the fever
When your immune system cannot destroy the virus you have it’ll cause a fever
Your brain sets your body temp
After the fever breaks the infection has been destroyed
Antagonistic effectors to things doing the opposite for the same reason
Example of antagonistic effectors shivering and sweating (both trying to keep body temp normal)
Positive feedback when the input and the output are the same (rare)
During child birth (input- contractions, output- contractions)
Mosquito bite (input- itches, output- itches after you scratch it)
Created by: user-2017831
 

 



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