Question

match the items.

a. ventral horn
b. dorsal horn
c. spinal nerve
d. dorsal root ganglion

1. where sensory neuron cell bodies are found
2. where motor neuron cell bodies are found
3. where sensory impulses enter the spinal cord
4. where mixed (motor and sensory) impulses may be found

Explanation:

Identify anatomical structures

We analyze the four anatomical options:

• Ventral Horn: Contains somatic motor neuron cell bodies.
• Dorsal Horn: Contains interneurons receiving sensory input.
• Spinal Nerve: Formed by the fusion of dorsal and ventral roots; contains both sensory and motor fibers (mixed).
• Dorsal Root Ganglion: Contains cell bodies of pseudounipolar sensory neurons.

Match sensory cell bodies

Using Nervous System Anatomy, sensory neuron cell bodies reside outside the spinal cord in the dorsal root ganglion.

• Match: 1 to d.

Match motor cell bodies

Using Nervous System Anatomy, somatic motor neuron cell bodies are located in the gray matter of the ventral horn.

• Match: 2 to a.

Match sensory entry point

Sensory impulses travel via sensory axons through the dorsal root to enter the spinal cord at the dorsal horn.

• Match: 3 to b.

Match mixed impulses

The spinal nerve contains both sensory and motor fibers, carrying mixed impulses.

• Match: 4 to c.

Answer:

No.	Problem	Answer
2	Where motor neuron cell bodies are found	a. Ventral Horn
3	Where sensory impulses enter the spinal cord	b. Dorsal Horn
4	Where mixed (motor and sensory) impulses may be found	c. Spinal Nerve