The anterior choroidal artery originates from the internal carotid artery

Internal carotid artery

In human anatomy, the internal carotid arteries are two major arteries, one on each side of the head and neck. They arise from the common carotid arteries where these bifurcate into the internal and external carotid artery, and they supply the brain....

, though it also rarely arises from the middle cerebral artery

Middle cerebral artery

-External links:*...

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Structures supplied

The anterior choroidal artery serves many structures in the cerebrum

Telencephalon

The cerebrum or telencephalon, together with the diencephalon, constitutes the forebrain. The cerebrum is the most anterior region of the vertebrate central nervous system. Telencephalon refers to the embryonic structure, from which the mature cerebrum develops...

:

• choroid plexus
  Choroid plexus
  The choroid plexus is a structure in the ventricles of the brain where cerebrospinal fluid is produced...
  
   of the lateral ventricle and third ventricle
  Third ventricle
  The third ventricle is one of four connected fluid-filled cavities comprising the ventricular system within the human brain. It is a median cleft between the two thalami, and is filled with cerebrospinal fluid ....
  
  
• optic chiasm
  Optic chiasm
  The optic chiasm or optic chiasma is the part of the brain where the optic nerves partially cross...
  
   and optic tract
  Optic tract
  The optic tract is a part of the visual system in the brain.It is a continuation of the optic nerve and runs from the optic chiasm to the lateral geniculate nucleus....
  
  
• 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....
  
  
• lateral geniculate body
• globus pallidus
  Globus pallidus
  The globus pallidus also known as paleostriatum, is a sub-cortical structure of the brain. Topographically, it is part of the telencephalon, but retains close functional ties with the subthalamus - both of which are part of the extrapyramidal motor system...
  
  
• tail of the caudate nucleus
  Caudate nucleus
  The 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:...
  
  
• hippocampus
  Hippocampus
  The hippocampus is a major component of the brains of humans and other vertebrates. It belongs to the limbic system and plays important roles in the consolidation of information from short-term memory to long-term memory and spatial navigation. Humans and other mammals have two hippocampi, one in...
  
  
• amygdala
  Amygdala
  The ' are almond-shaped groups of nuclei located deep within the medial temporal lobes of the brain in complex vertebrates, including humans. Shown in research to perform a primary role in the processing and memory of emotional reactions, the amygdalae are considered part of the limbic system.-...
  
  
• substantia nigra
  Substantia nigra
  The substantia nigra is a brain structure located in the mesencephalon that plays an important role in reward, addiction, and movement. Substantia nigra is Latin for "black substance", as parts of the substantia nigra appear darker than neighboring areas due to high levels of melanin in...
  
  
• red nucleus
  Red nucleus
  The red nucleus is a structure in the rostral midbrain involved in motor coordination. It comprises a caudal magnocellular and a rostral parvocellular part.-Function:...
  
  
• crus cerebri

Disorders

The full extent of the damage caused by occlusion of the anterior choroidal artery is not known. However, studies show that the interruption of blood flow from this vessel can result in hemiplegia

Hemiplegia

Hemiplegia /he.mə.pliː.dʒiə/ is total paralysis of the arm, leg, and trunk on the same side of the body. Hemiplegia is more severe than hemiparesis, wherein one half of the body has less marked weakness....

 on the contralateral (opposite) side of the body, contralateral hemihypoesthesia, and homonymous hemianopsia

Homonymous hemianopsia

Hemianopsia or hemianopia is visual field loss that respects the vertical midline, and usually affects both eyes, but can involve one eye only. Homonymous hemianopsia, or homonymous hemianopia occurs when there is hemianopic visual field loss on the same side of both eyes...

.

These symptoms are thought to arise from ischemic

Ischemia

In medicine, ischemia is a restriction in blood supply, generally due to factors in the blood vessels, with resultant damage or dysfunction of tissue. It may also be spelled ischaemia or ischæmia...

 damage to the 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....

.

External links

• Blood supply at neuropat.dote.hu