Chapter 17: Cerebrum

Chapter 17: Cerebrum

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

1. Which of the following are projection fibers?
2. Corticospinal
3. Corticobrainstem
4. Thalamocortical
5. A and B
6. A, B, and C

ANS: E

Rationale: Projection fibers extend from subcortical structures to the cerebral cortex and from the cerebral cortex to the spinal cord, brainstem, basal ganglia, and thalamus.

2. The primary somatosensory cortex:
3. Receives information directly from the basal ganglia.
4. Processes unconscious somatosensory information.
5. Receives information via the dorsal column/medial lemniscus, and trigeminothalamocortical systems.
6. Processes auditory and vestibular information.
7. Performs none of the above.

ANS: C

Rationale: The primary somatosensory cortex processes conscious somatosensory information. This area of the cortex receives information from tactile and proprioceptive receptors via a pathway consisting of a peripheral afferent/dorsal column neuron, medial lemniscus, and thalamocortical neuron. Processing of auditory and vestibular information occurs in the primary auditory and primary vestibular cortices.

3. Recognition of an unseen object by touch and manipulation occurs in which of the following?
4. Cerebellum
5. Basal ganglia
6. Primary somatosensory cortex
7. Secondary sensory area
8. Dorsolateral prefrontal association

ANS: D

Rationale: The secondary sensory areas of the brain integrate tactile and proprioceptive information received from the thalamus and primary somatosensory cortex to provide stereognosis.

4. Categorizing sounds as language, music, or noise occurs in which of the following?
5. Superior colliculus
6. Secondary auditory cortex
7. Secondary visual cortex
8. Primary auditory cortex
9. Cochlear nuclei

ANS: B

Rationale: The secondary auditory cortex receives sound information from the primary auditory cortex and compares it with memories of other sounds. This comparison allows the sound to be classified and recognized as language, music, or noise.