Action potential is generated by

Assertion (A): Action potential is generated due to the exit of sodium ions from the neuron through the plasma membrane. Reason (R): Movement of sodium ions through the plasma membrane takes place under the influence of a stimulus.

A list of events occurring in the transmission of nerve impulse across the synapse is given below in a random order (i)Opening of specific ion channels allows the entry of ions, a new action potential is generated in the post-synaptic neuron. (ii)Neurotransmitter binds to the receptor on post synaptic membrane. (iii)Synaptic vesicle fuses with pre-synaptic membrane, neurotransmitter release into synaptic cleft. (iv)Depolarisation of pre-synaptic membrane. (v)Arrival of action potential at axon terminal. Which of the following options represents these events in a correct order ?

What is the maximum number of action potential generated by SAN?

When a neural signal reaching the neuromuscular junction releases acetylcholine, an action potential is generated first in

When a neural signal reaching the neuromuscular junction releases acetylcholine, an action potential is generated first in

Read the following statements : A. The action potential generated by the SA node stimulates both ventricles to undergo simultaneous contraction. B. The heart sound Lubb is associated with the closure of both semilunar valves. C. The QRS complex in ECG represents the depolarization of the ventricles. Select the appropriate option from the following :