receptors

Question 1

waht do pacinian corpuscles do

Answer 1

-are receptors
-that respond to changes in mechanical pressure
-they convert energy into an impulse

-detects pressure and converts into a generator potential which creates a nerve impulse

Question 2

waht happens in its resting state

Answer 2

-stretch mediated sodium ion channels in the membrane of receptors are closed and dont allow sodium ions into the receptor

-recepotr has a resting potential

Question 3

what happens when pressure is applied to the receptor

Answer 3

-the receptor changes shape and the membrane of the receptor becomes stretched

-this stretching causes deformation of the stretch mediated sodium ion channels and sodium ions diffuse in producing a generator potential

-if the generator potential is above threshold level , an action potential is produced and nerve impulses are transmitted along the neurone .