Initiation And Conduction Of Nerve Imluse

Question 1

Sympathetic division

Answer 1

Part of atonomic nervous system

Mobilizes body during emergancy situations

Question 2

Magnitude of nerve impulse is same irrespective of stregnth of stimulus

Answer 2

Velocity of nerve impulse is directly proportional to diameter of neuron

This velocity is affected by physical and chemical factors

Question 3

Depolarisation

Answer 3

Na+ influx

Question 4

Repolarisation

Answer 4

K+ efflux

Question 5

Conduction of nerve impulse is

Answer 5

Unidirectional

Question 6

Resting phase

Answer 6

Phase of polarisation
+ve charge outside Na+

-ve charge inside K+, -vely charged proteins

Question 7

RMP

Answer 7

—70 mV

Question 8

Na+ , K+ active pump

Answer 8

2K+ inside
3Na+ outside

Question 9

There can be small or large stimuli but there is nothing like small or large impulses

Answer 9

True

Question 10

There can be small or large impulses but there is nothing like small or large stimulus

Answer 10

False