The Hindbrain and Spinal Cord Flashcards
what 3 structures make up the Hindbrain?
the Pons,
the Medulla,
and the Cerebellum.
the sensory afferent division leads to…
the Spinal Cord (reflexes),
the Brain Stem (reflexes),
and the Cerebellum and Cerebrum (voluntary).
the afferent fibres enter the Spinal Cord at…
the dorsal root and the dorsal horn.
cell bodies of motor neurons are found where?
the ventral aspect of the Spinal Cord, coming out from the ventral root.
what is the lateral (descending) pathway?
motor neuron activates and sends signal along the axon, through the internal capsule thalamus, midbrain, medullary pyramids, white matter of Spinal Cord to get to the ventral horn.
what are the 2 ventromedial (descending) pathways?
pathway from soma in the Medulla to presynaptic terminals in the ventral horn.
pathway from soma in the Pons to presynaptic terminals in the ventral horn.
the Cerebellum contains neurons that receive…
sensory input.
what do the functions of the Cerebellum include?
co-ordination of movement,
balance,
posture.
the Cerebellum has a connection to the Cerebral Cortex via what?
a tract that comes down from the Neocortex to Cerebellum via the Pons.
the Cerebellar cortex has 4 layers:
the molecular layer,
the purkinje cell layer,
the granule cell layer,
and the white matter of folium.
the sensory division can also lead to…
Brainstem nuclei.
the Spinal cord consists of 2 sections…
Thoracic and Sacral.
what is the rostral ventrolateral medulla?
the nucleus important for output to sympathetic neurons of the spinal cord.
