CNS Flashcards
region of visceral sensory sites and perhaps pathways involved in addictive behaviors
insula
The three types of white matter in the brain
commissural, association, and projection
other commissures besides the corpus collosum?
anterior and posterior commissures
axons that connect the thalamus and the cerebral cortex is termed this
internal capsule - a projection tract
5 components of the basal ganglia
caudate nucelus, putamen, globus pallidus, substantia nigra and subthalamic nuceli
the striatum is made up of….
the putamen and caudate nuclei
The large sensory nucleus that is also part of the basal nuclei circuitry
thalamus (and subthalamus)
components of the diencephalon
retina, thalamus, hypothalamus, epithalamus, subthalamus
the third ventricle is proximal to this structure
the thalamus
the pineal gland is a part of this region
epithalamus
axons ascending from brainstem nuclei located throughout the brainstem that travel up to multiple sites in the cortex
reticular system/formation
the fourth ventricle is proximal to this structure
pons, cerebellum
The part of the ventricular system that is located in the region of the midbrain
cerebral aqueduct of Sylvius
Where are the pyramids (where the motor axons of the corticospinal pathway decussate) located
medulla
Where are the peduncles (the large white matter pathways into and out of the cerebellum) most closely located?
at the pons/cerebellum
midbrain pathway for vision
superior colliculi
midbrain pathway for hearing
inferior colliculi
types of neurons in the cerebellum
golgi, basket, stellate, granule, and perkinje
The parts of the limbic system
hippocampus, amygdala, parahippocampal gyrus and cingulate gyrus
the layer of the cortex that serves as the termination site for sensory axons coming from the thalamus
internal granular (thickest in parietal)
what cortical layer is thickest in the frontal lobe
internal pyramidal (the giant cell of Betz)
Where is the habenular nucleus? What is its function?
epithalamus. emotional response to odors.
The subthalamic nuclei consists of what 2 structures?
substatia nigra and red nucleus
What is an AMPA receptor
a sodium glutamate receptor for glutamate/aspartate. initiator of depolarization
What is an NMDA receptor
metabotropic Ca glutamate receptor for glutamate/aspartate. Blocked by Mg. responds to AMPA-caused volt change
