Medical Definition of Capsula interna

1. A massive layer (8 to 10 mm thick) of white matter separating the caudate nucleus and thalamus (medial) from the more laterally situated lentiform nucleus (globus pallidus and putamen). It consists of 1) fibres ascending from the thalamus to the cerebral cortex that compose, among others, the visual, auditory, and somatic sensory radiations, and 2) fibres descending from the cerebral cortex to the thalamus, subthalamic region, midbrain, hindbrain, and spinal cord. The internal capsule is the major route by which the cerebral cortex is connected with the brainstem and spinal cord. Laterally and superiorly it is continuous with the corona radiata which forms a major part of the cerebral hemisphere's white matter; caudally and medially it continues, much reduced in size, as the crus cerebri which contains, among others, the pyramidal tract. On horizontal section it appears in the form of a V opening out laterally; the V's obtuse angle is called genu (knee). Its anterior and posterior limbs, respectively, the crus anterior and crus posterior. Synonym: capsula interna. (05 Mar 2000)

Lexicographical Neighbors of Capsula Interna

capstones
capsula
capsula adiposa renis
capsula articularis
capsula articularis cricoarytenoidea
capsula articularis cricothyroidea
capsula cordis
capsula externa
capsula extrema
capsula fibrosa
capsula fibrosa glandulae thyroideae
capsula fibrosa perivascularis
capsula fibrosa renis
capsula glomeruli
capsula interna (current term)
capsula lentis
capsula lienis
capsula vasculosa lentis
capsular
capsular advancement
capsular antigen
capsular branches of renal artery
capsular cataract
capsular cirrhosis of liver
capsular flap pyeloplasty
capsular glaucoma
capsular ligament
capsular precipitation reaction
capsular space

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