Lecture 49 - Brain anatomy 3 Flashcards
what two divisions of the brain has gray matter located on the surface in the cortex and in the deep nuclei
telencephalon and cerebellum
what is the function of the flocculonodulus lobe of the cerebellum
vestibular
what is the function of the cerebellum
coordination and smoothing of movement (acts on initiated)
signs of cerebellar dysfunction
incoordination (ataxia)
overreaching gait (hypermetria)
intention tremors
vestibular signs
what does the pontine reticular formation
visceral function (sleep, urination)
movement (UMN, posture)
what LMN is located in the pons
CN5
what do vestibular nuclei connect to
CN 3, 4, and 6 nuclei
other brain regions
spinal cord
what is involved in the vestibular system
CN8 and the brain
what is a brain herniation
shifting of brain structures due to increased pressure in the cranial cavity
what two locations may the brain herniate
transtentorial (tentorium cerebelli)
foramen magnum
what cranial nerves have LMN projections
CN 6 - CN 12
T/F: brainstem deficits are usually ipsilateral
TRUE
brainstem lesion symptoms
- UMN dysfunction
- LMN deficits in CN 3 - 12
- ARAS
- alterations in vital functions
a CN VII deficit would be
lack of menace response
a CN VIII deficit would be
vestibular syndrome
