Test 9
41. With respect to the nuclei of the medulla:
a.  the smallest nucleus is the inferior olivary nucleus 

b. the inferior olivary nucleus is concerned with the control of 

c. the inferior olivary nucleus receives afferents from motor and 
    sensory cortices of the cerebral hemispheres and from the red 
    nucleus of the pons 

d. the main efferents from the inferior olivary nucleus are to the 
    cerebellum via the inferior cerebellar peduncle 

e. the nucleus ambiguus lies beneath the 4th ventricle deep within 
    the reticular formation 


42. Like the cerebrum the cerebellum has:

a. a highly convoluted surface made up of gyri and sulci 

b. an inner core of white matter 

c. a cortex with a diverse range of functions dependent on site 

d. a cortex that is made up of 6 layers 

e. ventricles that are filled with CSF produced by arachnoid 


43. The white matter of the cerebellum:
a. is concentrated in the hemispheres 

b. connects the hemispheres via the flocculus 

c. consists of afferent and efferent fibres only 

d. forms the inferior cerebellar peduncles 

e. is divided into fuzzy and climbing fibres 


44. In the cerebellar cortex:

a. afferent impulses arrive in the axons of Purkinje cells 

b. mossy fibres terminate in the granular layer 

c. mossy fibres divide into parallel fibres in the granular layer 

d. the molecular layer  is the outermost and is fibre rich 

e. climbing fibres arrive from the inferior olivary nucleus 

f. the Purkunje cells use GABA as their neurotransmitter 


45. Damage to the cerebellum results in:

a. nystagmus         

b. falling towards the contralateral side      

c. hemiballismus         

d. difficulty in walking in a straight line      

e. dysdiadochokinesis        

f. difficulty in initiating and terminating movements    

g. auditory hallucinations       

To test 10
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