NEURON FUNCTION OPEN NOTE QUIZ

• Nucleus

• Cell Body

• Axon

• Node of Ranvier

• Nucleus

• Cell Body

• Axon

• Node of Ranvier

• Nucleus

• Cell Body

• Axon

• Node of Ranvier

• Dendrites

• Axon Terminals

• Myelin Sheath

• Schwann Cells

When depolarization occurs ______; this allows the release of ______ into the ______.

• Sodium channels open; neurotransmitters; synaptic gap

• Potassium channels open; neurotransmitters; synaptic gap

• Calcium channels open; neurotransmitters; synaptic gap

• Calcium channels open; dopamine; cell body

The electrical impulse transmitted by a neuron is caused by the movement of _____.

• molecules

• ions

• electrons

• free radicals

If the inside of the neuron is negatively charged compared to the outside, the neuron is in the __________________.

• action potential

• excitatory phase

• retraction period

• resting potential

The operation of the sodium-potassium "pump" moves:

• sodium & potassium ions into the cell

• sodium & potassium ions out of the cell

• sodium ions into the cell & potassium ions out of the cell

• sodium ions out of the cell & potassium ions into the cell

Neural transmission across a synaptic cleft is accomplished by: 

• the movement of sodium & potassium from the presynaptic neuron to the postsynaptic neuron.
• impulses traveling as electrical currents across the gap. 
• impulses causing the release  of a neurotransmitter signal and its diffusion across the gap.
• impulses ricocheting back and forth across the gap.

This releases neurotransmitters which are sent into the synaptic cleft for receptors on the dendrite to taste

• axon
• axon terminal
• gene
• neuron