Pascinian Corpuscle

Question 1

What type of receptor is a pacinian corpuscle?

Answer 1

Mechanoreceptor

Question 2

What are the special types of channel proteins present in the neurone membrane of a pacinian corpuscle?

Answer 2

Stretch-mediated sodium ion channels

Question 3

What type of neurone runs through the centre of the pacinian corpuscle?

Answer 3

Sensory neurone

Question 4

How does a pacinian corpuscle allow detection of a stimulus?

Answer 4

The lamellae become deformed causing the stretch mediated sodium ion channels in the neurone membrane to open. Sodium ions enter the neurone depolarising the membrane and if the threshold is reached an action potential will be produced