Exam 13: The Peripheral Nervous System and Reflex Activity

The meningeal branch of a spinal nerve actually reenters the vertebral canal to innervate the meninges and blood vessels.

Mr. Smith staggered home after a long night at the local pub. While attempting to navigate the stairs, he passed out cold and lay all night with his right armpit straddling the staircase banister. When he awoke the next morning, he had a severe headache, but what bothered him more was that he had no sensation in his right arm and hand. Explain what caused this symptom in his arm.

Mixed cranial nerves containing both motor and sensory fibers include all EXCEPT which of the following?

The phrenic nerve arises from the left and right sides of cervical vertebra 3, 4 and 5. Describe the potential benefit of having the nerve exit from such a superior position and from multiple places on the spinal column.

Good friends Sami and Sara were picking roses when both encountered rose thorns. Sami just laughed and continued to pick more roses. Sara, however, had tears in her eyes and complained of how much the thorn prick hurt. What accounts for the difference in their response to the same pain stimulus?

Which of the following is the best explanation of how a stimulus's strength is transmitted to the central nervous system from sensory nerves?

All processing at the circuit level going up to the perceptual level must synapse in the___________.

A doctor asks her patient to follow the motion of her finger as she moves it up and down, left and right. Which of the following cranial nerves is NOT being tested?

Ralph sustained a leg injury in a bowling accident and had to use crutches. Unfortunately, he never took the time to learn how to use them properly. After two weeks of use, he noticed his fingers were becoming numb. Then he noticed his arms were getting weaker and tingling. What could be his problem?

Describe the cause and symptoms of paresthesia.

The sciatic nerve is a combination of which two nerves?

The posterior side of the thigh, leg, and foot is served by the___________ nerve.

A nurse is asked what is tabes dorsalis and what causes it. What should the response be?

Dermatome maps are useful to clinicians because ____________.

Which nerve is compressed in carpal tunnel syndrome?

Feeling a gentle caress on your arm would likely involve all of the following EXCEPT ___________.

As a cook chops red onions he begins to tear up due to activation of the lacrimal gland. Which of the following nerves provided the stimulus?

Bell's palsy is ____________.

If someone spills very hot coffee (200°F) on their skin, they will likely perceive much pain. Which of the following receptor types is causing this sensation?

The perineurium defines the boundary of a .