Chapter 14 Nervous System

During rapid eye movement (REM) sleep,

• • the muscles relax, and body temperature, blood pressure, and heart and respiratory rates fall.

• • a person begins to relax and feels drowsy.

• the muscles are paralyzed, and body temperature, blood pressure, and heart and respiratory rates increase.

• • the muscles are very relaxed, and body temperature, blood pressure, and heart and respiratory rates are at their lowest levels.

• a person falls into light sleep.

During brain surgery, the superior portion of the primary somatosensory cortex of a patient is stimulated. The patient is most likely to

• • talk to the surgeon

• • see the operating lights

• • feel something touching his back

• stick out his tongue

• • hear the surgeon ask for a tool

The reticular formation is an area of the brain that

• • is purely sensory in function

• • is purely motor in function

• • has sensory and motor components

• • serves higher order cognitive functions

 1. Cranial nerves III, IV, V, VI, VII, IX, X, and XII all have motor nuclei in the brainstem. True 
2. Functionally, the motor output projecting through the brainstem can be classified into two categories: somatic motor and sympathetic. False 
3. Vital functions, such as heart rate, blood pressure, and respiration, are regulated by nuclei in the brainstem. True 

• True

  False

  True

• False

  True

  False

• True

  True

  False

• False

  False

  True

The primary motor cortex for control of voluntary muscles is found in the

• • precentral gyrus of the frontal lobe

• • postcentral gyrus of the parietal lobe

• • postcentral gyrus of the temporal lobe

• • precentral gyrus of the parietal lobe

Lesions of the limbic system might result in

• • decreased sexual activity

• • enhanced fear and anger responses

• • increased appetite

• • loss of coordination

A patient is asked to tie their shoe while the clinician recorded the brain activity on a PET scan. Which of the following brain regions would "light up" the most?

• • Superior and inferior colliculi

• • Cingulate gyrus

• • Broca area

• • Premotor area

An electroencephalogram obtained from an adult in stage 4 sleep would likely display an abundance of _________blank .

• beta waves

• • alpha waves

• • delta waves

• • theta waves

Which of the following is mismatched?

• • Spinocerebellar tract – proprioception

• • Spinocerebellar tract – comparator function

• • Spinoreticular tract – light touch

• • Spinotectal tract – visual reflexes

• • Fasciculus cuneatus – vibration from upper body half

Visual input is sent to the brainstem via the _________blank nerve, whereas the _________blank nerve sends facial sensation to the brainstem.

• • facial; trochlear

• • optic; trigeminal

• • optic; facial

• • trigeminal; accessory