Neuro 5 Flashcards
Vestibulocerebellum
balance and coordination
Spinocerebellum
adjusts movements as they are occuring
- corrective feedback to fine-tune motor skills
Lesion = gait is affected because loss of motor coordination
cerebrocerebellum
- planning movements
- rapid alternating movements
- fine dexterity (quickness)
- initiation, termination, coordination and timing of movements
- motor learning
“wrong distance” can’t judge distance- movements “overshoot”, and then overcompensate
- patient can’t touch finger to nose, heel to shin - leads to intention tremor
dysmetria
the inability to perform rapid alternating muscle movements
dysdiadochokinesia
an inability to combine the various components of a movement to create fluid motion.
asynergia
“without order” (motor coordination is lost)
ataxia
ataxia of laryngeal muscles. jerky articulation, separation of syllables, changing sound intensities
Dysarythria
ataxia of ocular muscles. tremor of eyeballs that usually occurs when the patient attempts to fix eyes on an object off to the side.
Cerebellar Nystagmus
inability to maintain an upright position (affects gait).
Unstable, wide gait with irregular steps and lateral bending
truncal ataxia
low muscle tone
hypotonia
Lack of co-ordination between muscles or other body parts which usually work together. (postural abnormalities)
Asynergia
what is anterior fossa? What CN?
frontal, ethmoid and sphenoid. Only CN I
What is the middle fossa? Which CN?
sphenoid and temporal
C II to VI
what is in the posterior fossa?
temporal and occipital
CN VII-XII
All cranial nerves innervate the ipsilateral side expect one. Which?
CN II
All cranial nerves originate within the brainstem and their nerves exit off the brainstem. Except which two?
CN I and II
motor fibers to skeletal musculature (VOLUNTARY)
GSE (general somatic efferent)