6.1 Response to Stimuli Flashcards
1
Q
What effect does high pressure on the Pacinian corpuscule?
A
Pressure deforms the layers of membrane making up the Pacinian corpuscle; [1 mark]
Stretch-mediated sodium receptors are deformed; [1 mark]
The sodium ion channels open and sodium ions move into the cell; [1 mark]
The generator potential exceeds the threshold and an action potential is generated;
[1 mark]
2
Q
what effect does fewer Na+ ions have on the Pacnian corpuscule?
A
Threshold is NOT met so no action potential is generated (low levels of force= less sodium channels to open)
3
Q
A
