Recpetors Flashcards
0
Q
Pacinian Corpuscle
What kind of receptors are they?
Where are they found most commonly?
What do they enable organisms to know?
How does it transduce mechanical energy to a generator potential?
A
Mechanoreceptors
Fingers,soles of feet and external genetalia
Which joints are changing direction
Sensory neurone at centre of Pacinian corpuscle
too narrow to allow Na to pass through
Pressure applied changes shape and neurone becomes stretched
Widens allowing Na to pass through
Influx Na changes potential of memb
Generator potential–> action potential
1
Q
Where are they found? What do they receive and what do they do with this? What react to: Light Chemicals Temperature Touch Pressure
A
In sense organs Receive stimuli and transduce into an electrical impulse Photoreceptors Chemoreceptors Thermoreceptors Barrow receptors Mechanoreceptors
2
Q
What is a generator potential?
What does it cause?
A
Local depolarisation of membrane
Action potential
