Cranial nerve tutorial part 2 Flashcards
describe the shape of the midbrain on cross section
thinner at the back then widens at the front -penguin feet
what feature can be seen at the back of the midbrain on cross section
colliculi
what feature can be seen at the front of the midbrain on cross section
cerebral peduncle
describe the shape of the pons on cross section
bowl shaped
what structure is found at the back of the pons in the indentation
4th ventricle
what structures can be seen at the back of the pons
abducens nucleus and cerebellar peduncles
what structures can be seen at the back of the medulla
4th ventricle
hypoglossal nucleus, dorsal vagal nucleus
what structure can be seen at the front of the medulla
pyramid, olive
what is the shape of the rostral part of the medulla on cross section
butterfly
what is the function of the spinothalamic tract
course touch, pain and temp
what is the function of the spinocerebellar tract
unconscious proprioception
what is the function of the medial lemniscus
proprioception and fine touch
what is the function of the corticospinal and corticobulbar tracts
conscious movement
what is the function of the medial longitudinal fasciculus
co ordination of eye and neck movements
what structures are on the medial side in the rule of four
medial lemniscus
motor tracts (corticospinal and corticobulbar)
medial longitudinal fasciculus
somatic motor nuclei
what structures are on the lateral side in the rule of four
sympathetic tracts
spinocerebellar
spinothalamic
somatic sensory nuclei
what is the blood supply to the medulla
anterior spinal artery
vertebral
posterior inferior cerebellar
what is the blood supply to the medial part of the medulla
anterior spinal
what is the blood supply to the anterolateral part of the medulla
vertebral
what is the blood supply to the posteriolateral part of the medulla
posterior inferior cerebellar
what is the blood supply to the pons
basilar, branches of the basilar and branches of anterior inferior cerebellar
what is the blood supply to the medial part of the pons
basilar
what is the blood supply to the posterolateral part of the pons
branches of the basilar
what is the blood supply to the anterolateral part of the pons
branches of the basilar and AICA
what is the blood supply to the midbrain
basilar, posterior cerebral, posterior communicating, superior cerebellar and branches
what is the blood supply to the to the anteriolateral part of the midbrain
branches of posterior cerebral
what is the blood supply to the posterolateral part of the midbrain
posterior cerebral and superior cerebellar
what is the blood supply to the medial part of the midbrain
basilar and posterior cerebral and posterior communicating
what is the main arterial supply to the midbrian
posterior cerebral
what is the main arterial supply to the pons
basilar
what is the main arterial supply to the medulla
anterior spinal
