Zones
Zones
Now let's do some practice questions to make sure we understand the organization of inputs to the cerebellum. Then we can move on to the internal circuitry of the cerebellum. The answers appear at the bottom of the screen.
7A. In the figure below, name the zones of the cerebellum that receive input from axons traveling within the structure labeled A. ______, ______ answer
7B. In the figure below, name the zones of the cerebellum that receive input from the structured labeled B. ______, ______ answer
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8. The following questions relate to the labeled drawing below.
8A. Axons from B travel in which cerebellar peduncle? ______ answer
8B. Does A project to the same side of the pons and spinal cord? ______ answer
8C. Which cortical area (A or B) is involved in "higher" planning of motor movements? ______ answer
8D. Which cortical area (A or B) sends information (via the pons) to the lateral zone of the cerebellum? ______ answer
8E. Which cortical area (A or B) sends information (via the pons) to the intermediate zone of the cerebellum? ______ answer
8F. Does either cortical area A or B send information (via the pons) to the medial zone of the cerebellum? YES NO ______ answer
8G. Does either cortical area A or B send information (via the pons) to the flocculonodular zone (or lobe) of the cerebellum? YES NO ______ answer
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9. The following questions relate to the TWO labeled drawings below.
9A. What cortical areas project to D? _______, ______ answer
9B. What zone(s) of the cerebellum are innervated by axons of the cells in A? _________, ______ answer
9C. A lesion of B results in loss of pain and temperature (LEST WE FORGET THE SPINAL CORD!!!!) from what level(s)? ______ answer
9D. Where are the cells of origin of C? ______ answer
9E. Axons in E terminate in which zones of the cerebellum? _________, ______ answer
9F. Do axons with cell bodies in the motor cortex travel in E? ______ answer
9G. Are there any preganglionic sympathetic neurons at the spinal cord level illustrated below? ______ answer
9H. Are there corticobulbar fibers that innervate motor VII present at the pontine level illustrated below? ______ answer
9I. Would a lesion of F result in a loss of the consensual corneal reflex upon stimulation of the contralateral (to the lesion) cornea? ______ answer
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10. The following questions relate to the labeled drawing below.
10A. A, B and C are part of the _____ nervous system, while points D, E and F belong to the _____ system. answer
10B. Fibers from cells that lie in nucleus A project to which zone of the cerebellum? _____ answer
10C. True or False; Neurons in nucleus C are considered lower motor neurons. answer
10D. True or False; Cells in A project to the lateral zone of the right cerebellum via the middle cerebellar peduncle. answer
10E. B is the _____ cerebellar peduncle or _____. answer
10F. Vestibular input reaches the cerebellum via 2 pathways; peripherally from the _____ and centrally from the _____. answer
10G. True or False; axons of cells in E project directly to the cerebellum. answer
10H. E is the _____ ganglion. answer
10I. F is the _____ _____ canal. answer
10J. A lesion at D would result in stumbling to the _____ side. answer
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