Unit 3_Integration & Coordination

The types of neurons include (select all that apply)...

• sensory

• motor

• interneurons

• extraneurons

Based on the diagram, what neuron structure is shown at position A?

• axon

• dendrite

• meylin sheath

• cell body

Based on the diagram, what neuron structure is shown at position B?

• meylin sheath

• axon

• cell body

• dendrite

Based on the diagram, what neuron structure is shown at position C?

• meylin sheath

• cell body

• axon

• dendrite

Based on the diagram, what neuron structure is shown at position D?

• axon

• meylin sheath

• dendrite

• cell body

A neuron must be stimulated in order to send an impulse.

• True

• False

In the cell membrane, Na ions and Ca ions are the cause of membrane potential.

• True

• False

The basic steps of impulse transmission in a cell are

• neuron at rest, stimulation, Na+ channels open, action potential movement towards the axon terminals

• neuron at rest, Na+ channels open, stimulation, action potential movement towards the axon terminals

• neuron at rest, stimulation, action potential movement towards the axon terminals, Na+ channels open

• neuron at rest, movement towards the axon terminals, stimulation, Na+ channels open, action potential

The space where an axon terminal of one neuron can transfer an impulse to another neuron (or cell) is...

• a pons

• a synapse

• a neurotransmitter

• re-uptake

Excitatory neurotransmitters cause impulses in the next neuron.

• True

• False