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Exam 12: The Central Nervous System

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Question 61

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Describe the role of the reticular activating system in cortical arousal and stimulation.

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The reticular activating system (RAS) ap...

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Question 62

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REM sleep is associated with .

A) decreased activity of the brain, especially the cerebral cortex
B) temporary skeletal muscle inhibition except for ocular muscles and diaphragm
C) decreased vital signs, such as heart rate and blood pressure
D) decreased oxygen use, especially in the cerebral cortex

E) A) and B)
F) A) and C)

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Question 63

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Second- order neurons of both the specific and nonspecific ascending pathways terminate in the )

Injury to the hypothalamus may result in all of the following except .

NREM sleep normally exhibits four distinct stages, which appear to alternate.

Figure 12.2Using Figure 12.2, match the following: -Thomas is wearing a T- shirt with the saying "Only Left- Handed People Are In Their Right Minds". What does this mean?

Figure 12.3Using Figure 12.3, match the following: -The is the main switch station for memory; if the right and left areas are damaged, the past is lost.

The first obvious sign that the nervous system is forming in the embryo is the thickening of the surface ectoderm to form the neural plate.

Figure 12.1Using Fig. 12.1, Match the following: -Pons

The left cerebral hemisphere is usually dominant.

Most of the ascending and descending pathways to and from the brain cross over from one side of the body to the other.

Which of the following is the mildest consequence of traumatic brain injury?

Figure 12.3Using Figure 12.3, match the following: -The two longitudinal ridges on the medulla oblongata where many descending fibers cross over are called the .

Figure 12.2Using Figure 12.2, match the following: -A temporary cessation of breathing during sleep found most commonly in the elderly is called sleep .

Which part of the brain functions to filter out repetitive and/or unimportant stimuli?

The canal connecting the third and fourth ventricles and running through the midbrain is the foramen of Monro.

Figure 12.2Using Figure 12.2, match the following: -The large commissure that connects the right and left sides of the brain is called the .

Figure 12.2Using Figure 12.2, match the following: -Corpus callosum.

Figure 12.3Using Figure 12.3, match the following: -Site of sensory soma.

Sensory neurons enter the spinal cord via the horn.