Brainstem and spinal cord Flashcards
Midbrain: superior colliculi
location: rostral tectum
function: visual relay, relay connections for head/neck movement
Midbrain: inferior colliculi
location: caudal tectum
fn: auditory relay, connections from peripheral to cortical auditory structures
Midbrain: substantia nigra
location: tegmentum
fn: part of basal ganglia (involved w/ movement)
MAJOR dopamine-producing and storage area
Midbrain: Ventral Tegmental Area
location: rostral tegmentum
fn: a role in reward system (reinforcing behavior) w/ projections to limbic system cortex
Midbrain: red nuclei
location: rostral tegmentum
fn: motor coordination, motor control for flexors
Midbrain: oculomotor nuclei
location: rostral tegmentum
fn: OCM nuclei-contain neurons to innervate extraocular muscles; E-W nuclei-pre-ganglionic nuclei innervating iris sphincter and ciliary muscle
Midbrain: trochlear nuclei
location: caudal tegmentum
fn: contains nuclei going on to innervate the superior oblique of the eye
Midbrain: superior cerebellar peduncle
location: caudal tegmentum /rostral pons
fn: relay station to cerebellum
Midbrain: raphe nuclei
location:caudal tegmentum /rostral pons
fn: major SEROTONIN-producing neurons in the brain
Midbrain: crus cerebri
location: basis pedunculi
fn: large bundles of somatotopically organized axons containing fibers from motor pathways
Midbrain: cerebral peduncle
location: basis pedunculi, ventral tegmentum (substantia nigra)
fn: stalks attaching cerebrum to brainstem (contain large descending motor N tracts)
Midbrain: periaqueductal grey
location: tectum/tetgment
