Anatomy of a Neuron

What is the main role of a neuron?

• To create oxygen and other necessary molecules for survival
• To absorb nutrients from the bloodstream
• To pass impulses from the brain to the body or body to the brain
• To contract and relax to cause movements

Which part of the neuron is where the axon joins the cell body?

• nodes of Ranvier
• synaptic end bulbs
• axon terminal
• axon hillock

Which part of the neuron is also known as the cell body?

• axon
• soma
• dendrites
• myelin sheath

Which part of the neuron carries impulses away from the soma and towards the next neuron?

• axon
• dendrites
• nucleus
• Schwann cells

Which part of the neuron produces the myelin sheath in the peripheral nervous system?

• axon hillock
• nodes of Ranvier
• synaptic end bulbs
• Schwann cells

Which part of the neuron receives impulses from the previous neuron?

• nodes of Ranvier
• synaptic end bulbs
• dendrites
• axon terminals

Which part of the neuron stores neurotransmitters to be released into the synapse when an impulse arrives?

• axon terminals
• nodes of Ranvier
• synaptic end bulbs
• dendrites

Which part of the neuron are gaps in the myelin sheath?

• synaptic end bulbs
• nodes of Ranvier
• axon hillocks
• Schwann cells

Which part of the neuron are fine projections at the end of an axon that pass the impulse toward the next neuron?

• soma
• dendrites
• axon terminals
• axon hillocks

Which part of the neuron is a lipid layer that insulates the axon and speeds up how quickly an impulse can pass?

• myelin sheath
• nodes of Ranvier
• Schwann cells
• axon terminals