Chap 13 Quiz

Question 1

What is the name of the thin strand of pia mater that helps to anchor the spinal cord to the coccyx?

Answer 1

Filum terminale

Question 2

The posterior horns of the spinal cord contain

Answer 2

axons of sensory neurons and cell bodies of interneurons

Question 3

The ________ nuclei within the gray matter of the spinal cord send action potentials to skeletal muscles.

Answer 3

somatic motor

Question 4

Because most pathways decussate, each side of the brain processes information from the ________ side of the body.

Answer 4

contralateral

Question 5

Which extrapyramidal tract regulates posture and balance?

Answer 5

reticulospinal tract

Question 6

If a person suffers an injury in the region of the thorax and is unable to breathe well, you would suspect that a specific nerve from the list below was damaged. Which one would be a good candidate?

Answer 6

. Phrenic nerve

Question 7

A person damages the nerve that innervates the deltoid muscle and that receives sensory input from the superolateral arm. This nerve is called

Answer 7

axillary nerve

Question 8

Where the sciatic nerve splits, it branches directly to the

Answer 8

tibial and common fibular nerves

Question 9

Which statement accurately describes spinal nerves?

Answer 9

Each spinal nerve is mixed in that it contains some sensory axons and some motor axons

Question 10

The largest and longest nerve in the body is the ________ nerve.

Answer 10

sciatic