QuestionSBA
QuestionChoice
Pacinian corpuscles are skin mechanoreceptors present in the dermis of skin. They detect pressure changes and vibrations in the skin. When pressure is applied, the deformation of the receptor membrane causes sodium channels to open and depolarisation to occur.
10003016
a
Pressure-sensitive sodium ion channels
QuestionChoice
This is incorrect as Pacinian corpuscles are pressure-sensitive sodium channels. The sodium channels open and cause depolarisation when the membrane is deformed by external pressure.
10003020
e
Pressure-sensitive calcium ion channels
QuestionChoice
This is incorrect as Pacinian corpuscles are pressure sensitive sodium channels. The sodium channels open and cause depolarisation when the membrane is deformed by external pressure.
10003017
b
Pressure-sensitive potassium ion channels
QuestionChoice
This is incorrect as Pacinian corpuscles are mechanoreceptors, not free nerve endings that detect pain.
10003018
c
Nociceptors
QuestionChoice
This is incorrect as Pacinian corpuscles are mechanoreceptors, not thermoreceptors.
10003019
d
Heat-sensitive sodium ion channels
Concept
Chapter
2693
4104
Properties of sensory mechanoreceptors
Topic
152
Neuroscience
13150
A 32-year-old female comes in with second-degree burns to her fingertips. She is unable to feel fine touch at the ends of her fingers, but can feel pressure and vibration.

What type of sensory receptors are Pacinian corpuscles?
a