What are the parts of internal capsule?

These are the anterior limb, genu, posterior limb, retrolentiform and sublentiform parts of the internal capsule 1,2:

anterior limb (anterior crus) lies between the head of the caudate nucleus medially and the lentiform nucleus laterally.
genu.
posterior limb (posterior crus)
retrolentiform part.
sublentiform part.

What does internal capsule do?

The internal capsule describes a region deep in the brain that functions as a communication pathway. The internal capsule allows communication between areas of the cerebral cortex and areas of the brainstem.

What goes through internal capsule?

The internal capsule contains both ascending and descending axons, going to and coming from the cerebral cortex. The corticospinal tract constitutes a large part of the internal capsule, carrying motor information from the primary motor cortex to the lower motor neurons in the spinal cord.

What is blood supply of internal capsule?

The internal capsule and basal nuclei are supplied by perforating branches of the anterior cerebral artery (ACA), Heubner’s artery, middle cerebral artery (MCA), internal carotid artery (ICA) and anterior choroidal artery (AChA).

Is corona radiata part of basal ganglia?

Corona radiata: White matter core of the cerebral hemispheres. Caudate nucleus: C-shaped mass of gray matter closely related to the lateral ventricle. Component of the basal ganglia. Plays a role in motor control.

What happens if the internal capsule is damaged?

Damage to this area can affect functions like speaking, chewing, and swallowing. As a result, individuals may struggle to swallow (dysphagia), have difficulty with eating, and/or struggle with speech (dysarthria and other motor speech disorders) after an internal capsule stroke.

What happens if internal capsule is damaged?

Where is the internal capsule in the brain?

The internal capsule (IC) is a white matter structure composed of bundles of myelinated fibers that course past the basal ganglia. It is located in the inferomedial portion of each cerebral hemisphere and separates the caudate nucleus and thalamus from the lentiform nucleus.

How many striatum are there?

three nuclei
The striatum is composed of three nuclei: caudate, putamen, and ventral striatum. The latter contains the nucleus accumbens (NAcc). The caudate and putamen/ventral striatum are separated by the internal capsule, a white matter tract between brain cortex and brainstem.

Which nuclei comprise the striatum?

The corpus striatum is made up of the caudate nucleus and the lentiform nucleus. The caudate nucleus bulges into the lateral ventricle and is comprised of a head, body and a tail.

Where is the left corona radiata?

The corona radiata is a bundle of nerve fibers located in the brain. Specifically, the nerves of the corona radiata carry information between the brain cells of the cerebral cortex and the brain cells in the brain stem.

What is the sublenticular segment of the brain?

Finally, the sublenticular segment contains fibers of the auditory radiations. Lesions of the sublenticular limb can create auditory deficits. In general, the internal capsule is an important white matter structure that contains fiber tracts coordinating major cognitive, motor, and sensory pathways.

Can lesions of the sublenticular limb cause auditory impairment?

Lesions of the sublenticular limb can create auditory deficits. In general, the internal capsule is an important white matter structure that contains fiber tracts coordinating major cognitive, motor, and sensory pathways.

What is the difference between genu and retrolenticular portion?

the retrolenticular portion is caudal to the lenticular nucleus and carries the optic radiation (from medial part of lateral geniculate nucleus) also known as the geniculocalcarine tract. The fiber from lateral part of lateral geniculate nucleus is carried through the retrolenticular portion. The genu is the flexure of the internal capsule.