☝️ Receptors

Two examples are given here to represent the general properties of receptors: the Pacinian corpuscle and the rods and cones in the eye.


1. The Pacinian corpuscle


Named by its Italian discoverer Filippo Pacini (si splendido uomo!*), it is a 1 mm diameter skin receptor which enables us to perceive pressure and vibration. This is the receptor responsible for our awareness off smooth vs rough surfaces, shallow vs intense tactile sensation, etc.


How does this seemingly magical process take place?



The central capsule is surrounded by lamellae. At the heart of the capsule lies the sensory nerve tube. Throughout the corpuscle you can see…

πŸ† Read 500+ topics for all 6 UK exam boards πŸ†

πŸ“ Enter now to claim your FREE 3-day trial and find answers to all your revision topicsΒ πŸ“

βœ”οΈ Just Β£3.49/month after that. Cancel anytimeΒ βœ”οΈ

You explain everything so simply!Β πŸ™‚Β -SecretDuck on The Student Room