Exam 13: The Peripheral Nervous System and Reflex Activity

Striking the "funny bone" is actually stimulation of (or injury to) the ___________.

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

A bit of dust blows into and touches the cornea of the eye. Which of the following is likely to happen?

Regeneration within the CNS___________ .

An emergency medical technician is examining a trauma victim by shining a pen light into her patient's eye. She records the reactivity of the patient's pupils as they constrict when stimulated by the light. This test supports which of the following?

We are aware of our facial expression because of which functional feature of which cranial nerve?

Spinal nerves exiting the cord from the level of L4 to S4 form the ___________.

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

A patient has lost the ability to taste food. Which nerve may have been damaged?

One of the adaptive advantages of human body hair is believed to be its ability to help us detect potentially harmful insects crawling or landing on our skin. Which receptor type is most associated with this type of perception?

Tactile sensation is a combination of touch, pressure, stretch, and vibration. Which of the following is most likely the receptor type that senses tactile stimulation?

Bill is a mechanic that works with vibrating tools. He also exerts force on his wrists when twisting wrenches and screws. Bill has a tingling sensation in the lateral portion of his hand. The doctor suspects carpal tunnel syndrome. Which of the following tests might the doctor try on her patient?

Select the statement that is most correct.

Reciprocal inhibition means that while one sensory nerve is stimulated, another sensory neuron for synergistic muscles in the same area is inhibited and cannot respond.

Select the correct definition.

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

Name and describe five examples of exteroceptors that are NOT cutaneous receptors of the skin.

Describe how the muscle spindles and the tendon organs vary in their role during the stretch reflex and opposing tendon reflex.

We can touch our finger to our nose while our eyes are closed in part because we can sense the position and movement of our joints as well as the length of stretch in our muscles. These sensations create awareness of our body's positioning. The following receptors are most likely responsible for this ability.

Which of the following nerves does NOT arise from the brachial plexus?