Exam 12: The Spinal Cord, Spinal Nerves, and Spinal Reflexes

The spinal cord consists of five regions and _______________ segments.

Suppose that you feel something brushing against your abdomen. The sensory information would be carried to the spinal cord over a __________ ramus.

In the spinal cord, white matter is separated into ascending and descending tracts organized as

The ventral rami of spinal nerves C5 to T1 contribute fibers to the _________ plexus.

The specific strip of skin that is innervated by a specific spinal nerve is called an)___________

Figure 12- 1 The Spinal Cord Use Figure 12- 1 to answer the following questions: -The spinal cord continues to elongate until about age

The posterior horns of the spinal cord contain mainly

Mary is in an automobile accident and suffers a spinal cord injury. She has lost feeling in her lower body. Her doctor tells her that swelling is compressing a portion of her spinal cord. Which part of her cord is likely to be compressed?

In________ , axon collaterals extend back toward the source of the impulse and further stimulate the earlier neurons.

Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the

If the dorsal root of a spinal nerve is severed,

Reflexes based on synapses formed during development are_________ reflexes.

Nerve tracts or fasciculi make up the

Compared to the vertebral column, the spinal cord is

Figure 12- 1 The Spinal Cord Use Figure 12- 1 to answer the following questions: -What is the function of the structure labeled "12"?

Figure 12- 1 The Spinal Cord Use Figure 12- 1 to answer the following questions: -The white matter of the spinal cord contains

Bill contracts a viral disease that destroys cells in the posterior gray horns in his spinal cord. As a result, which of the following would you expect?

In which plexus does the ulnar nerve arise?

Reflexes that activate muscles on the same side of the body as the stimulus are called__________

Enlargements of the spinal cord occur