Internal Capsule Flashcards
WHat is a small but important structure in the brain?
Internal Capsule
The internal capsule is important because?
The fibers that it contains
The anterior limb of the internal capsule lies between what?
Caudate nucleus and lentiform nucleus
The posterior limb of internal capsule lies between what?
Lentiform nucleus and thalamus
The thalamus acts as a relay station for what?
All sensory input to cortex EXCEPT olfaction
The globus pallidus, putamen, and caudate nucleus are collectively called what?
Basal Ganglia
The basal ganglia controls complex patterens of what?
Voluntary motor behavior
The internal capsule is divided into what three parts?
Anterior limb
Genus
Posterior limb
Anterior limb carries what?
Thalamocortical fibers (sensory from below head)
Genu (bend) carries what?
Corticobulbar fibers (motor to head)
Posterior limb carries what?
Corticospinal tract (motor to below head)
Auditory and visual association fibers
Thalamocortical fibers
Blood supply to anterior limb is from what?
Anterior and Middle cerebral arteries
Blood supply to genu is from what?
Middle cerebral A
Blood supply to posterior limb is from what?
Middle cerebral A
Anterior choroidal A from internal carotid A
