The pyramids of the medulla contain
A. ascending motor tracts.
B. descending motor tracts.
C. ascending sensory tracts.
D. descending sensory tracts.
E. None of these choices are correct.
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Question 2) The fact that the right side of the brain controls the left side of the body is explained by the
A. division of the cerebrum into two hemispheres.
B. division of the cerebellum into two hemispheres.
C. decussation of the pyramids in the medulla.
D. need for contra-lateral control of body function.
E. brainstem being below the midbrain.
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Question 3) Which of the following statements concerning the brainstem is true?
A. The brainstem consists of the medulla, pons, and cerebellum.
B. The brainstem is responsible for higher level thinking skills.
C. Damage to the brainstem is usually fatal.
D. All twelve cranial nerves enter or exit from the brainstem.
E. The brainstem is a relay for sensory input.
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Question 4) In the CNS, clusters of gray matter containing cell bodies are called
A. nuclei.
B. pyramids.
C. tracts.
D. peduncles.
E. ganglia.
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Question 5) What do the cavities of the neural tube become in the adult brain?
A. subarachnoid space
B. ventricles
C. auricles
D. coelom
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Question 6) From which embryonic brain region does the cerebellum form?
A. telencephalon
B. diencephalon
C. mesencephalon
D. metencephalon
E. myelencephalon
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Question 7) What structures are formed from neural crest cells?
A. sensory, autonomic, and enteric neurons
B. pigmented body cells
C. adrenal medulla
D. facial bones
E. All of the choices form from neural crest cells
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Question 8) From which germ layer does the nervous system form?
A. endoderm
B. mesoderm
C. exoderm
D. ectoderm
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Question 9) From which embryonic brain region does the medulla oblongata form?
A. telencephalon
B. diencephalon
C. mesencephalon
D. metencephalon
E. myelencephalon
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Question 10) The cerebrum develops from the embryonic region called the
A. telencephalon.
B. mesencephalon.
C. diencephalon.
D. metencephalon.
E. rhombencephalon.
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