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zoo ch. 13 pt. 2

brain and cranial nerves

QuestionAnswer
pyramids contains tracts of motor fibers originating in cerebral cortex
decussation area where some pyramidal fibers cross over to opposite side of medulla
olives contains inferior olivary nuclei (relays motor information to cerebellum)
nucleus gracilis, nucleus cuneatus relay somatic sensory information to thalamus
cardiac centers regulate heart rate and force of contraction
vasomotor centers regulate distribution of blood flow
respiratory rhythmicity centers regulates rhythm of breathing
reticular formation loosely organized mass of gray matter containing nuclei that regulate vital autonomic functions
apneustic and pneumotaxic centers adjust activity of respiratory rhythmicity centers
reticular formation loosely organized mass of gray matter containing nuclei that regulate vital autonomic functions
tectum region posterior to aqueduct of the midbrain;contains corpora quadrigemina
superior colliculi initiates reflex responses to visual stimuli
inferior colliculi initiates reflex responses to auditory stimuli
tegmentum region anterior to aqueduct of the midbrain
red nucleus sends subconscious motor commands to upper limbs
substantia nigra contains darkly pigmented cells that adjust activity in basal nuclei
cerebral peduncles (little feet) nerve fiber bundles carrying voluntary motor information
reticular formation includes reticular activating system, that maintains consciousness
cerebellum functions: involuntary coordination of movement and posture
cerebellar hemispheres are separated by vermis
anterior and posterior lobes are separated by primary fissure
cerebellar cortex superficial gray matter, contains Purkinje cells
folia folds on surface
cerebellar nuclei deeper gray matter
Created by: btuehara
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