Summary OCR A Biology Neuronal communication

Main role of receptor
a
sensory
↳ a
defect stimulus
e

↳ a change in the err




General format:


Receptor ->
sensors S relay ->
motor
->effector -> response
neurone
neurone neurone
↓
normally muscle
or
gland


Transducers -> they calvert energy from are form another
into


(majority receptors)


Pacinian corpusle
↓
found

on skin

↓detects

pressure changes
↓ caused by

pressure is applied
↓
membrane surrounding the neurone stretches

↓

gaps/
between
spaces appear phospholipiats

, opens Nat channels
↓

Wat wishes in along electrochemical gradient
generating an action potential