Exam 13: The Peripheral Nervous System and Reflex Activity

The only cranial nerves to extend beyond the head and neck region are the vagus nerves.

Pressure, pain, and temperature receptors in the skin are .

Name an exteroceptor that is not a cutaneous receptor and explain why it is called an exteroceptor.

Figure 13.1Using Figure 13.1, match the following: -Body movement receptors are called _ .

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?

Nerves that carry impulses toward the CNS only are .

The cerebellum and basal nuclei are involved in regulating motor activity, starting and stopping movements, and coordinating postural movements.

The sciatic nerve is a combination of which two nerves?

Figure 13.3Using Figure 13.3, match the following: -All but T2-T12 branch and form nerve plexuses.

What is the normal response of the plantar reflex? What is Babinski's sign and what does it indicate?

Select the statement that is most correct.

Distinguish between monosynaptic and polysynaptic reflexes and between ipsilateral and contralateral reflex responses.

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

Figure 13.3Using Figure 13.3, match the following: -Supplies each muscle with fibers from more than one nerve.

Irritation of the phrenic nerve may cause diaphragm spasms called hiccups.

A reflex that causes muscle relaxation and lengthening in response to muscle tension is called a )

Which receptors adapt most slowly?

The second cranial nerve forms a chiasma at the base of the brain for partial crossover of neural fibers.

Starting at the spinal cord, the subdivisions of the brachial plexus are (in order):

In the somatosensory system there are no third- order neurons in the cerebellum.