1. Central Nervous System MCQs

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

3. Prosencephalon Neuroencephalon Mesencephalon Rhombencephalon
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. chambers. vesicles. ventricles. atria.
The central cavities in the brain that are filled with cerebrospinal fluid are known as
chambers.
vesicles.
ventricles.
atria.

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

6. thalamus. insula. corpus cavernosum. corpus callosum.
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. frontal. sagittal. temporal. occipital.
The cerebrum is divided into five lobes, including all of the following except the
frontal.
sagittal.
temporal.
occipital.

8. insula occipital lobe parietal lobe temporal lobe
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. occipital lobe. parietal lobe. frontal lobe. mammillary bodies.
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. alpha wave beta wave theta wave delta wave
Your attempt to answer this question will most likely cause increased ____ activity in your cerebrum.
alpha wave
beta wave
theta wave
delta wave

12. alpha waves beta waves theta waves delta waves
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. Broca's area Wernicke's area the cingulate gyrus the angular gyrus
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. basal nuclei, including the corpus striatum and the lentiform nucleus
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. precentral gyrus. thalamus. hypothalamus. medulla oblongata.
"Centers" for hunger, thirst, fear, sexual arousal, and pleasure are found in the
precentral gyrus.
thalamus.
hypothalamus.
medulla oblongata.

18. The lateral spinothalamic tract The fasciculus cuneatus
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. frontal occipital parietal temporal
The _______ lobe of the cerebrum is associated with auditory sensation.
frontal
occipital
parietal
temporal