The Nervous System and Impulse Conduction

The first step in the conduction of a nerve impulse is

• the neuron at rest has a negative resting potential
• a stimulus causes the sodium ion channel to open
• the resting potential is fully restored
• the potassium channels open

Which is the last step in the synaptic transmission of a nerve impulse from pre-synaptic neuron to a postsynaptic cells.

• a nerve impulse arrives at the axon terminal of the presynaptic cell
• vessicles in the presynaptic neutron fuse with the cell membrane
• neurotransmitter molecules are released into the synaptic cleft
• neurotransmitters bind to receptor proteins on the postsynaptic cell

Which ions are involved in the electrical nerve impulse?

• Iodine and Sodium
• Potassium and Sodium
• Iron and Sodium
• Calcium and Iodine

When a neuron is at REST,

• the inside of the neuron is negatively charged compared to the outside.

• the inside of the neuron is positively charged compared to the outside.

• there is no charge difference established

• none of these is true

Depolarization occurs when

• sodium channels open

• potassium channels open

• sodium channels close

• potassium channels close

Neurotransmitters are released from the

• Dendrites
• Post-synaptic neuron
• Presynaptic neuron
• Axon

Identify Z

• Dendrite

• Axon Terminal

• Neurotransmitters

• Synapse

X

• Axon Terminal Button

• Neurotransmitters

• Synapse

• Synaptic cleft

Calcium is responsible for

• signaling the release of the neurotransmitter

• signaling Na to be released into the membrane

• signaling the release of K out of the membrane

• serving as the neurotransmitter

The voltage difference between the inside and the outside of the neuron when there is no impulse passing is ........

• action potential

• santatory conduction

• resting potential

• resting state