Search results
Results from the WOW.Com Content Network
The thalamus derives its blood supply from a number of arteries: the polar artery (posterior communicating artery), paramedian thalamic-subthalamic arteries, inferolateral (thalamogeniculate) arteries, and posterior (medial and lateral) choroidal arteries. [24] [25] These are all branches of the posterior cerebral artery. [8] [26]
The thalamogeniculate artery is either a single artery or group of smaller arteries [1] arising from the posterior cerebral artery (distal to the origin of the posterior communicating artery). [2] [1] It is part of the posterolateral central arteries. [2] It supplies parts of the thalamus (including the geniculate nuclei). [2] [1]
Posterior cerebral artery (PCA), which supplies blood to the posterior portion of the brain, including the occipital lobe, thalamus, and midbrain [5] Both the ACA and MCA originate from the cerebral portion of internal carotid artery , while PCA branches from the intersection of the posterior communicating artery and the anterior portion of the ...
In neuroanatomy, the lateral geniculate nucleus (LGN; also called the lateral geniculate body or lateral geniculate complex) is a structure in the thalamus and a key component of the mammalian visual pathway. It is a small, ovoid, ventral projection of the thalamus where the thalamus connects with the optic nerve. There are two LGNs, one on the ...
The following are central branches of the PCA, also known as perforating branches: Thalamoperforating and thalamogeniculate or postero-medial ganglionic branches: a group of small arteries which arise at the commencement of the posterior cerebral artery: these, with similar branches from the posterior communicating, pierce the posterior perforated substance, and supply the medial surfaces of ...
Frontopolar artery (polar frontal): Arises after the orbitofrontal, close to the curvature of A2 over the corpus callosum. It can also originate from the callosal marginal . A3 , also termed the pericallosal artery , is one of the (or the only) main terminal branches of the ACA, which extends posteriorly in the pericallosal sulcus to form the ...
Reciprocal CT projections to the thalamus are of a higher order than, and synapse with, the TRN in much greater number than do thalamocortical projections to cortex. [7] This suggests that the cortex has a much bigger role in top down processing and regulation of thalamic activity than do the processes originating in thalamic interneurons.
The paired (right and left) fronto-polar thalamic veins (Latin: venae fronto-polares thalami dextra et sinistra) originate each on the corresponding frontal polus of the thalamus and drain its anterior portion. Benno Shlesinger in 1976 classified these veins as belonging to the central group of thalamic veins (venae centrales thalami). [1]