3.5 Flashcards
Mesencephalon
The midbrain; a region of the
brain that surrounds the cerebral aqueduct;
includes the tectum and the tegmentum.
tectum
The dorsal part of the midbrain;
includes the superior and inferior
colliculi
Superior Colliculi
Protrusions on top of the midbrain; part
of the visual system.
Inferior Colliculi
Protrusions on top of
the midbrain; part of the auditory system.
Brain stem
The “stem” of the brain,
from the medulla to the midbrain,
excluding the cerebellum.
Tegmentum
The ventral part of the midbrain; includes the periaqueductal gray
matter, reticular formation, red nucleus,
and substantia nigra
recticular formation
A large network of
neural tissue located in the central region
of the brain stem, from the medulla to the
diencephalon
Periaqueductal grey matter
The
region of the midbrain surrounding the
cerebral aqueduct; contains neural circuits
involved in species-typical behaviours
Red nucleus
A large nucleus of the
midbrain that receives input from the
cerebellum and motor cortex and sends
axons to motor neurons in the spinal cord
Substantia nigra
A darkly stained region of the tegmentum that contains neurons that communicate with the caudate nucleus and putamen in the basal ganglia
Hindbrain
The most caudal of the three
major divisions of the brain; includes the
metencephalon and myelencephalon.
Cerebellum
A major part
of the brain located dorsal to the pons,
containing the two cerebellar hemispheres,
covered with the cerebellar cortex; an important component of the motor system
Cerebellar cortex
The cortex that covers
the surface of the cerebellum
Deep cerebellar nuclei
Nuclei located
within the cerebellar hemispheres; receive
projections from the cerebellar cortex and
send projections out of the cerebellum to
other parts of the brain
Cerebellar peduncle
One
of three bundles of axons that attach each
cerebellar hemisphere to the dorsal pons.
