Initiation And Conduction Of Nerve Imluse Flashcards
Sympathetic division
Part of atonomic nervous system
Mobilizes body during emergancy situations
Magnitude of nerve impulse is same irrespective of stregnth of stimulus
Velocity of nerve impulse is directly proportional to diameter of neuron
This velocity is affected by physical and chemical factors
Depolarisation
Na+ influx
Repolarisation
K+ efflux
Conduction of nerve impulse is
Unidirectional
Resting phase
Phase of polarisation
+ve charge outside Na+
-ve charge inside K+, -vely charged proteins
RMP
—70 mV
Na+ , K+ active pump
2K+ inside
3Na+ outside
There can be small or large stimuli but there is nothing like small or large impulses
True
There can be small or large impulses but there is nothing like small or large stimulus
False