3+4

A detailed illustration of a neuron with action potentials being transmitted, highlighting synapses and ion channels in vibrant colors.

Neurophysiology Challenge

Test your knowledge of neurophysiology with our engaging quiz! This quiz covers essential concepts related to resting membrane potentials, action potentials, and synaptic transmission.

Key Features:

Multiple choice questions
Interactive learning experience
Designed for students and enthusiasts of neuroscience

20 Questions5 MinutesCreated by JumpingNeuron451

Types of channels can open and close, regulating permeability of the cell membrane:

Leak channels

Gated channels

If a membrane potential changed from -70 to +100 what will we have

Depoalrization

Repolarization

Hyperepolarisation

The opening voltage-gated potassium channels is responsible for which part of the action potential?

Depolarization of the membrane

Repolarization of the membrane

Hyperpolarization of the membrane

Refractory period

Threshold stimuli are those which are strong enough to:

Close voltage-gated Na+channels.

Open voltage-gated K+ channels.

Close voltage-gated K + channels.

Open voltage-gated Na+ channels.

A signal at an inhibitory synapses

Increase the Na gates .

Decrease the threshold level

Opening K gates

Which of the following happen during muscle contraction

Decrease I band width

Increase A band width

Increase I band width

26-When voltage-gated K+ channels open during action potential of a nerve The nerve depolarizes

True

False

Action potential

Inhibitory postsynaptic potential (IPSP) is produced by increased permeability of postsynaptic membrane to

K+

NA+

CA +2

Glucose

If the membrane potential of this cell is −80 millivolts, the driving force is greatest for which ion?

K+

Na+

Ca2+

Cl-

Spatial summation

Adding two different excitation on one junction

Adding three different excitation on one junction

Adding two different excitation on two junction

Adding thee different excitation on two junction

The unequal distribution of sodium and potassium between the ICF and ECF Result from sodium being pumped out and potassium being pumped into the cells

True

False

Relative refractory period:

Is a period during which second action potential cannot be produced no matter how strong is the stimulus.

Is a period during which second action potential can be produced only by an exceptionally strong triggering.

Neurophysiology Challenge

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