Central Nervous System MCQs

1. Central Nervous System MCQs

2. The ________ layer of the embryo gives rise to the tissues of the nervous system. • ectoderm • blastoderm • mesoderm • endoderm

3. In the fourth week after conception, the anterior end of the neural tube differentiates into three principal swellings which later become regions of the brain. Which of the following is not one of these three swellings? Prosencephalon Neuroencephalon Mesencephalon Rhombencephalon

4. The central cavities in the brain that are filled with cerebrospinal fluid are known as chambers. vesicles. ventricles. atria.

5. The gray matter of the brain constitutes primarily the ____ portion of the brain. cortex medulla gyri sulci

6. The right and left cerebral hemispheres are connected to each other mainly by a bundle of nerve fibers called the thalamus. insula. corpus cavernosum. corpus callosum.

7. The cerebrum is divided into five lobes, including all of the following except the frontal. sagittal. temporal. occipital.

8. Four lobes of the cerebrum can be seen from the surface, but the ____, a fifth lobe lies deep to these and cannot be seen without probing or dissecting the brain. insula occipital lobe parietal lobe temporal lobe

9. Sensations from the skin are received by what part of the brain? the precentral gyrus the postcentral gyrus Wernicke's area the amygdala

10. Blindness is usually caused by damage to the eyes, but could also result from trauma to the brain that destroys the occipital lobe. parietal lobe. frontal lobe. mammillary bodies.

11. Your attempt to answer this question will most likely cause increased ____ activity in your cerebrum. alpha wave beta wave theta wave delta wave

12. Certain low frequency waves called ____ would be normal for your EEG if you were asleep, but would indicate brain damage if they appeared in your EEG while you were awake. alpha waves beta waves theta waves delta waves

13. Decussation (crossing over) of nerve fibers is responsible for the fact that somatesthetic sensations from the right side of the body are received by the left cerebral cortex. left-handed people recover from damage to the language areas of the brain faster than right-handed people. the right cerebral hemisphere is better than the left at geometric puzzles, recognizing faces, and composing music. the right cerebral hemisphere is better than the left at geometric puzzles, recognizing faces, and composing music. Leonardo da Vinci, Michelangelo, and the author of your text (S. Fox), were left-handed.

14. Damage to _______ causes a person to speak very slowly and with poor articulation. Broca's area Wernicke's area the cingulate gyrus the angular gyrus

15. Fear appears to be processed by what part of the brain? the frontal lobes the angular gyrus the thalamus the limbic system

16. The ____ seems to be involved in converting short-term memories into long-term memory. basal nuclei, including the corpus striatum and the lentiform nucleus Wernicke's area (superior temporal gyrus) left medial temporal lobe, including the hippocampus and the amygdaloid nucleus prefrontal cortex

17. "Centers" for hunger, thirst, fear, sexual arousal, and pleasure are found in the precentral gyrus. thalamus. hypothalamus. medulla oblongata.

18. Which of the following would be considered a descending spinal cord tract? The lateral spinothalamic tract The fasciculus cuneatus The corticospinal tract The anterior spinocerebellar tract

19. The _______ lobe of the cerebrum is associated with auditory sensation. frontal occipital parietal temporal