Tag: generation of nerve impulse

Questions Related to generation of nerve impulse

Multiple choice biology coordination generation and conduction of nerve impulse generation of nerve impulse neurons and synapses

State of complete inexcitability between polarisation and repolarisation is

  1. Refractory period

  2. Synaptic delay

  3. Action potential

  4. Depolarisaion

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The refractory period is the time during which a neuron is incapable of generating another action potential, occurring after depolarization and during repolarization.

Multiple choice biology coordination generation and conduction of nerve impulse generation of nerve impulse neurons and synapses

Cell bodies of motor nerve fibres occur in

  1. Dorsal root of spinal nerve

  2. Dorsal horn of spinal cord

  3. Ventro-lateral horn of spinal cord

  4. Ventral root of spinal cord

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The cell bodies of motor neurons (somatic efferent neurons) are located in the ventral (anterior) horn of the spinal cord gray matter.

Multiple choice biology coordination generation and conduction of nerve impulse generation of nerve impulse neurons and synapses

In resting nerve what is true

  1. 3N$a^+$ are pumped in and 2 $K^+$ pumped out
  2. 3N$a^+$ are pumped out for every 2$K^+$ pumped in
  3. There is no Na-K pump

  4. Na-K pump stops working

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Na+/K+ pump maintains the resting potential by actively transporting 3 Na+ ions out of the cell and 2 K+ ions into the cell for every ATP molecule hydrolyzed.