What Types of Axons Are Contained Within the Dorsal Roots

question 72

Multiple Choice

What types of axons are contained within the dorsal roots of a spinal nerve?

• A) Sensory axons only
• B) Motor axons only
• C) Both sensory and motor axons

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Definitions:

Dendrite

A branched extension of a neuron that receives stimuli and conducts impulses toward the cell body.

Myelin Sheath

The fatty layer that surrounds and insulates the axons of some neurons, which enables faster transmission of electrical impulses.

Neurotransmitters

Chemicals that transmit signals across a synapse from one neuron to another neuron, muscle cell, or gland cell.

Synaptic Vesicle

Membrane-bound sacs in the presynaptic terminals of neurons that store neurotransmitters, which are released into the synaptic cleft in response to an action potential.