Choose the proper answer from the following key to respond to the descriptions relating to spinal cord anatomy. (Some terms are used more than once.)
Key: a. sensory b. motor c. both sensory and motor d. interneurons

1. primary neuron type found in dorsal horn
2. primary neuron type found in ventral horn
3. neuron type in dorsal root ganglion
4. fiber type in ventral root
5. fiber type in dorsal root
6. fiber type in spinal nerve

Explain why spinal nerves are mixed nerves.

Match each anatomical term in the key to the descriptions given below.

a. cauda equina

b. conus medullaris

c. filum terminale

d. foramen magnum

__________1. most superior boundary of the spinal cord

__________2. meningeal extension beyond the spinal cord terminus

__________3. spinal cord terminus

__________4. collection of spinal nerves traveling in the vertebral canal below the terminus of the spinal cord

The general structural features seen in most cervical through lumbar vertebrae, and how their structure relates to the anatomy of the spinal cord and spinal nerves

Match the key letters on the diagram with the following terms.

________ 1. central canal

________ 2. dorsal horn

________ 3. dorsal median sulcus

________ 4. dorsal root ganglion

________ 5. dorsal root of spinal nerve

________ 6. gray commissure

________ 7. lateral horn

________ 8. spinal nerve

________ 9. ventral horn

________ 10. ventral median fissure

________ 11. ventral root of spinal nerve

Match the key letters on the diagram with the following terms.

________ 1. central canal

________ 2. dorsal horn

________ 3. dorsal median sulcus

________ 4. dorsal root ganglion

________ 5. dorsal root of spinal nerve

________ 6. gray commissure

________ 7. lateral horn

________ 8. spinal nerve

________ 9. ventral horn

________ 10. ventral median fissure

________ 11. ventral root of spinal nerve

Match the key letters on the diagram with the following terms.

________ 1. central canal

________ 2. dorsal horn

________ 3. dorsal median sulcus

________ 4. dorsal root ganglion

________ 5. dorsal root of spinal nerve

________ 6. gray commissure

________ 7. lateral horn

________ 8. spinal nerve

________ 9. ventral horn

________ 10. ventral median fissure

________ 11. ventral root of spinal nerve

From the key, choose the name of the tract that might be damaged when the following conditions are observed. (More than one choice may apply; some terms are used more than once.)

1 . uncoordinated movement 2. lack of voluntary movement 3. tremors, jerky movements 4. diminished pain perception 5. diminished sense of touch

Key: a. dorsal columns (fasciculus cuneatus and fasciculus gracilis) b. lateral corticospinal tract c. ventral corticospinal tract d. tectospinal tract e. rubrospinal tract f. vestibulospinal tract g. lateral spinothalamic tract
h. ventral spinothalamic tract

From the key, choose the name of the tract that might be damaged when the following conditions are observed. (More than one choice may apply; some terms are used more than once.)

1. uncoordinated movement
2. lack of voluntary movement
3. tremors, jerky movements
4. diminished pain perception
5. diminished sense of touch

Key: a. dorsal columns (fasciculus cuneatus and fasciculus gracilis)
b. lateral corticospinal tract
c. ventral corticospinal tract
d. tectospinal tract
e. rubrospinal tract
f. vestibulospinal tract
g. lateral spinothalamic tract
h. ventral spinothalamic tract

What would happen if the following structures were damaged or transected? (Use the key choices for responses.) Key: a. loss of motor function b. loss of sensory function c. loss of both motor and sensory function
________1. dorsal root of a spinal nerve
________2. ventral root of a spinal nerve
________3. ventral ramus of a spinal nerve

Match the key letters on the diagram with the following terms.

________ 1. central canal

________ 2. dorsal horn

________ 3. dorsal median sulcus

________ 4. dorsal root ganglion

________ 5. dorsal root of spinal nerve

________ 6. gray commissure

________ 7. lateral horn

________ 8. spinal nerve

________ 9. ventral horn

________ 10. ventral median fissure

________ 11. ventral root of spinal nerve

Match the key letters on the diagram with the following terms. 1 . central canal
2. dorsal horn 3. dorsal median sulcus
4. dorsal root ganglion 5. dorsal root of spinal nerve 6. gray commissure 7. lateral horn 8. spinal nerve 9. ventral horn 10. ventral median fissure 11 . ventral root of spinal

Match each anatomical term in the key to the descriptions given below. Key: a. cauda equina b. conus medullaris c. filum terminale d. foramen magnum ______ 1 . most superior boundary of the spinal cord ______ 2. meningeal extension beyond the spinal cord terminus ______ 3. spinal cord terminus ______ 4. collection of spinal nerves traveling in the vertebral canal below the terminus of the spinal cord

When comparing human and sheep brains, you observed some profound differences between them. Record your observations in the chart below.\