Quiz on Nerve Impulse and Synapse

What is the cell potential difference at rest state?

• -70 mV

• +40 mV

• -40 mV

• +70 mV

What occurs when a nerve cell is stimulated?

• Inflow of potassium ions

• Outflow of sodium ions

• Outflow of potassium ions

• Inflow of sodium ions

What is the state of a nerve cell on stimulation when its outer surface is negatively charged and inner surface is positively charged?

• Polarization state

• Depolarization state

• Rest state

• Repolarization state

What is the phenomenon of depolarization followed by repolarization called?

• Synapse

• Nerve Impulse

• Action Potential

• All or None Law

What determines the speed of nerve impulse propagation along the nerve fiber?

• Concentration of ions

• Type of neurotransmitters

• Diameter of the nerve fiber

• Presence of synapse

What law states that the nerve impulse will not be generated unless the stimulus is strong enough to stimulate the nerve with maximal strength?

• All or None Law

• Newton's Law

• Ohm's Law

• Boyle's Law

What is the site present between the terminal branches of the axon of one neuron and the dendrites of the next neuron?

• Myelin Sheath

• Neurotransmitter

• Action Potential

• Synapse

What is the function of synaptic vesicles in the synapse?

• Release of neurotransmitters

• Storage of ions

• Propagation of nerve impulse

• Generation of action potential

What leads to the stimulation of dendrites in the synapse and changes the permeability of the membrane to sodium and potassium ions?

• Action of cholinesterase enzyme

• Rupture of synaptic vesicles

• Calcium ions entering the cell

• Neurotransmitters binding to receptors

What is the term for the junction between two neurons where communication occurs?

• Myelin Sheath

• Neurotransmitter

• Synapse

• Action Potential