Exam 13: The Peripheral Nervous System and Reflex Activity

Which receptors adapt most slowly?

Figure 13.1 Using Figure 13.1, match the following: -Damage to this nerve would keep the eye from rotating inferolaterally.

Speculate about the benefit of having the nerve supply of the diaphragm, which is located in the thoracic-lumbar area of the spinal cord, arise from cervical nerves.

The synapse of the olfactory nerves with the mitral cells is called a ________.

Match the following: A) Lumbar plexus B) Brachial plexus C) Cervical plexus D) Sacral plexus -Trauma to a nerve of this plexus may cause wrist drop.

Match the following: A) Lens B) Fovea centralis C) Aqueous humor D) Retina -The structure most responsible for focusing light rays that enter the eye.

The mucous membrane that lines the eyelids and is reflected over the anterior surface of the eyeball is the conjunctiva.

Figure 13.4 Using Figure 13.4, match the following: -Acts as a reflexively activated diaphragm to vary pupil size.

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

Match the following: A) Conduction deafness B) Sensorineural deafness C) Tinnitus -One of the most common results of otitis media.

The first "way station" in the visual pathway from the eye, after there has been partial crossover of the fibers in the optic chiasma, is the ________.

The extrinsic eye muscle motor units contain only 8 to 12 muscle cells and in some cases as few as 2 or 3 muscle cells.

Match the following reflexes to their function: A) Tendon B) Flexor C) Plantar D) Stretch E) Crossed-extensor -Prevents muscle overstretching and maintains muscle tone.

How does accommodation of muscle spindles figure in the importance of stretch routines as a warm-up for exercise?

Which of the following is not a way that sensory receptors are classified?

Match the following: A) Lumbar plexus B) Brachial plexus C) Cervical plexus D) Sacral plexus -The obturator and femoral nerves branch from this plexus.

The primary receptor for pain stimuli is the ________.

Figure 13.3 Using Figure 13.3, match the following: -Rod.

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?

Which of the follow types of neurons are replaced throughout adult life?