2 - topography of the brain

what makes up the brainstem

midbrain

pons

medulla oblongata

what cranial nerve emerge from the brainstem

CN III to XII

function of brainstem

basic bodily functions necessary for survival (e.g. HR, BP, RR)

where is the 4th ventricle located in relation to cerebellar peduncles

in between the peduncles on the posterior aspect

what does the cranial part of the medulla contain

grey matter

cranial nerve nuclei

nuclei of reticular information or vital centres

interior olivary nucleus - sensory nuclei gracile and cuneate

what does the caudal part of the medulla contain

white matter

pyramidal tracts

medial lemniscus

inferior cerebellar peduncle

where is the 4th ventricle located in relation to pons

posterior to pons

what cranial nerve originate from pons surface

V, VI, VII and VIII

what is the function of superior colliculi

visual reflexes

what is the function of inferior colliculi

auditory reflexes

what are the left and right hemispheres of the cerebellum separated by

vermis

what does each hemisphere of the cerebellum contain

anterior lobe

posterior lobe

flocconodular lobe

how is the cerebellum connected to brainstem

3 cerebellar peduncles

- superior

- middle

- inferior

what does the grey matter of the cerebellum contain

context on surface

deep nuclei

what does the white matter of the cerebellum contain

arboe vitae

cerebellar peduncles

how does information about function of cerebellum reach cerebral cortex

superior cerebellar peduncle

how do you test for abnormality within cerebellar function

finger to nose test

knee heel test

walking in straight line heel to toe

What is the thalamus?

sensory relay station

where is the hypothalamus

below the thalamus

function of hypothalamus

homeostasis

blood supply to the brain

internal carotids, vertebral arteries, circle of willis

what are the vertebral arteries a branch of

subclavian artery

what is the circle of willis a branch of

internal carotid artery

posterior cerebral artery

basilar artery

- forming a continuous circle

what does the anterior cerebral artery supply

frontal and parietal lobes

what does the middle cerebral artery supply

frontal, temporal, and parietal lobes

what does the posterior cerebral artery supply

temporal and occipital lobes

where is the cavernous sinus located

either side of pituitary body

what passes trough cavernous sinus

cranial nerves and internal carotid artery

what do the dural venous sinuses drain into

internal jugular vein