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Where is substantia perforata anterior?

Where is substantia perforata anterior?

basal forebrain
The anterior perforated substance, or substantia perforata anterior, is an area in the basal forebrain that plays an important role with regards to the blood supply of deep grey matter structures of the brain.

What is anterior perforated substance?

The anterior perforated substance is a bilateral irregularly quadrilateral area in front of the optic tract and behind the olfactory trigone, from which it is separated by the fissure prima; medially and in front, it is continuous with the subcallosal gyrus; it is bounded laterally by the lateral stria of the olfactory …

Is the anterior perforated substance cholinergic?

It consists of fibers that are said to arise in the parolfactory area, the gyrus subcallosus and the anterior perforated substance, and course backward in the longitudinal striae to the dentate gyrus and the hippocampal region. This is a cholinergic bundle of nerve fibers posterior to the anterior perforated substance.

What is the function of posterior perforated substance?

The posterior perforated substance is the depressed area between the crura is termed the interpeduncular fossa, and consists of a layer of gray matter which is pierced by small apertures for the transmission of blood vessels; its lower part lies on the ventral aspect of the medial portions of the tegmenta, and contains …

What is the olfactory tubercle?

The olfactory tubercle (OT), also known as the tuberculum olfactorium, is a multi-sensory processing center that is contained within the olfactory cortex and ventral striatum and plays a role in reward cognition.

What is the olfactory trigone?

Medical Definition of olfactory trigone : a triangular area of gray matter on each side of the brain forming the junction of an olfactory tract with a cerebral hemisphere near the optic chiasma.

What is substantia Innominata?

The substantia innominata (plural: substantiae innominatae), or substantia innominata of Meynert, is an area of mixed grey and white matter located within the anterior perforated substance in the basal forebrain. It contains the acetylcholine-rich basal nucleus of Meynert.

Which part of the brainstem is the posterior perforated substance?

interpeduncular fossa
The posterior perforated substance is a triangular area of grey matter located within the interpeduncular fossa. The apex of the triangle corresponds to the pons, the sides being the cerebral crura and the base forming the ventral, medial aspect of the tegmentum.

Where is the posterior cerebral artery?

occipital lobe
The posterior cerebral artery (PCA) is one of a pair of arteries that supply oxygenated blood to the occipital lobe, part of the back of the human brain. The two arteries originate from the distal end of the basilar artery, where it bifurcates into the left and right posterior cerebral arteries.

Is substantia Innominata part of basal ganglia?

Comparative neuroanatomical investigations in primates and non-primates have helped disentangle the anatomy of the basal forebrain region known as the substantia innominata. In most mammals, the extended amygdala presents itself as a ring of neurons encircling the internal capsule and basal ganglia.

What is the function of the anterior perforated substance?

The anterior perforated substance, or substantia perforata anterior, is an area in the basal forebrain that plays an important role with regards to the blood supply of deep grey matter structures of the brain.

How is the olfactory tract related to the anterior perforated substance?

When the olfactory tract nears the anterior perforated substance, also called the ventral striatopallidal region, it becomes flatter and widens as the olfactory trigone. The tract’s fibers continue, from the caudal angles of the trigone. They appear as divergent medial and lateral olfactory striae, bordering the anterior perforated substance.

When to use the deep inferior epigastric artery perforator?

Allen and Treece and Blondeel et al. expanded the use of the deep inferior epigastric artery perforator (DIEAP) flap to breast reconstruction and raised the operation to a high level of technical refinement.

Where is the blood supply from the posterior perforated substance?

Blood supply is by numerous small branches of the posterior cerebral arteries. The posterior perforated substance contains the interpeduncular nucleus.