Nerve Impulses

What is the gap between the axon terminal of one neuron and the dendrite of the next neuron called?

• Synapse
• Node of Ranvier
• Joint
• Neuromuscular Junction

What is the substance that is used to pass a nerve impulse from one neuron to the next?

• Calcium ions
• Sodium ions
• Potassium ions
• Neurotransmitters

Put the following in order: 1-Resting Potential, 2-Depolarization, 3-Repolarization, 4-Propogation of Action Potential

• 1,3,2,4
• 1,4,2,3
• 2,3,4,1
• 2,1,3,4

Acetylcholine, Dopamine, GABA, and Serotonin are all

• Dendrites
• Neurotransmitters
• Endorphins
• Neurons

nerve impulse

• action potential
• resting potential
• membrane potential
• synapse

When a neuron is depolarized, what are the first channels to open?

• Sodium
• Potassium
• Calcium
• ACTH

When a neuron is resting, the inside of the axon has a ____________ charge.

• positive
• negative

When a neuron is not engaged in an impulse.

• Resting potential
• Action potential
• Neural potential
• Synaptic potential

Which ions are involved in the electrical nerve impulse?

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

What ion causes an action potential?

• Sodium
• Potassium
• Calcium
• Hydrogen