Exam 13: The Peripheral Nervous System and Reflex Activity

Which of the following is the correct simple spinal reflex arc?

The cranial nerve with a cervical origin (spinal cord) is the _.

The cranial nerves that have neural connections with the tongue include all except the .

External strabismus and ptosis could be caused by damage to the oculomotor nerve.

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?

The facial nerve is cranial nerve number .

Potentially damaging stimuli that result in pain are selectively detected by .

Problems in balance may follow trauma to which nerve?

If the ventral root of a spinal nerve were cut, what would be the result in the tissue or region that nerve supplies?

The obturator nerve branches from the sacral plexus.

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

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.

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

Inborn or intrinsic reflexes are .

A patient who received a blow to the side of the skull exhibits the following signs and symptoms on that side of the face: he is unable to close his eye, and the corner of his mouth droops. Which cranial nerve has been damaged?

In a crossed- extensor reflex, if the right arm was grabbed it would flex and the left arm would )

Partial or total loss of smell is known as .

Figure 13.1Using Figure 13.1, match the following: -Damage to this nerve would cause dizziness, nausea, and loss of balance.

After axonal injury, regeneration in peripheral nerves is guided by .

The highest level of motor control involves the basal nuclei and the .