Anterolateral central arteries
Encyclopedia
The anterolateral central arteries, antero-lateral ganglionic branches, or lenticulostriate arteries, are a group of small arteries which arise at the commencement of the middle cerebral artery
, are arranged in two sets:
More modern texts divide the anterolateral central arteries into "lateral striate arteries" and "medial striate arteries".
The lenticulostriate arteries originate from the initial segment of middle cerebral artery (MCA)
. They are small perforating arteries, which enter the underside of the brain substance to supply blood to part of the basal ganglia
and posterior limb of the internal capsule
. The lenticulostriate perforators are end arteries
.
The name of these arteries is derived from some of the structures it supplies: the lenticular nucleus and the striatum
.
Middle cerebral artery
-External links:*...
, are arranged in two sets:
- one, the internal striate, passes upward through the inner segments of the lentiform nucleusLentiform nucleusThe lentiform nucleus or lenticular nucleus comprises the putamen and the globus pallidus within the basal ganglia. It is a large, cone-shaped mass of gray matter just lateral to the internal capsule.-Etymology:...
, and supplies it, the caudate nucleusCaudate nucleusThe caudate nucleus is a nucleus located within the basal ganglia of the brains of many animal species. The caudate nucleus is an important part of the brain's learning and memory system.-Anatomy:...
, and the internal capsuleInternal capsuleThe internal capsule is an area of white matter in the brain that separates the caudate nucleus and the thalamus from the lenticular nucleus. The internal capsule contains both ascending and descending axons....
; - the other, the external striate, ascends through the outer segment of the lentiform nucleusLentiform nucleusThe lentiform nucleus or lenticular nucleus comprises the putamen and the globus pallidus within the basal ganglia. It is a large, cone-shaped mass of gray matter just lateral to the internal capsule.-Etymology:...
, and supplies the caudate nucleusCaudate nucleusThe caudate nucleus is a nucleus located within the basal ganglia of the brains of many animal species. The caudate nucleus is an important part of the brain's learning and memory system.-Anatomy:...
.
More modern texts divide the anterolateral central arteries into "lateral striate arteries" and "medial striate arteries".
The lenticulostriate arteries originate from the initial segment of middle cerebral artery (MCA)
Middle cerebral artery
-External links:*...
. They are small perforating arteries, which enter the underside of the brain substance to supply blood to part of the basal ganglia
Basal ganglia
The basal ganglia are a group of nuclei of varied origin in the brains of vertebrates that act as a cohesive functional unit. They are situated at the base of the forebrain and are strongly connected with the cerebral cortex, thalamus and other brain areas...
and posterior limb of the internal capsule
Internal capsule
The internal capsule is an area of white matter in the brain that separates the caudate nucleus and the thalamus from the lenticular nucleus. The internal capsule contains both ascending and descending axons....
. The lenticulostriate perforators are end arteries
End artery
An end artery is an artery that is the only supply of oxygenated blood to a portion of tissue. End arteries are also known as terminal arteries....
.
The name of these arteries is derived from some of the structures it supplies: the lenticular nucleus and the striatum
Striatum
The striatum, also known as the neostriatum or striate nucleus, is a subcortical part of the forebrain. It is the major input station of the basal ganglia system. The striatum, in turn, gets input from the cerebral cortex...
.
External links
- http://www.dartmouth.edu/~humananatomy/part_8/chapter_43.html