The anterior perforated substance is an 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; laterally it is bounded by the lateral stria of the olfactory tract and is continued into the uncus. Image File history File links Gray732. ... In animal anatomy, the rhinencephalon is a part of the brain involved with olfaction. ... Image File history File links Gray724. ... Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... NeuroNames is a system of nomenclature for the brain and related structures. ... Elseviers logo. ... The optic tract is a part of the visual system in the brain. ... The olfactory trigone is a small triangular area in front of the anterior perforated substance. ... The olfactory tract is a narrow white band, triangular on coronal section, the apex being directed upward. ... The temporal lobes are part of the cerebrum. ...
Its gray substance is confluent above with that of the corpus striatum, and is perforated anteriorly by numerous small bloodvessels. The corpus striatum is composed of the caudate nucleus and the putamen. ...
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant. The University of Michigan, Ann Arbor (UM, U of M or U-M) is a coeducational public research university in the state of Michigan. ... eMedicine is an online clinical medical knowledge base that was founded in 1996. ... The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body (or Grays Anatomy as it has more commonly become known) is an anatomy textbook widely regarded as a classic work on human anatomy. ...
Specific substance A is usually isolated from hog gastric mucin, and specific substance B usually from the glandular portion of horse gastric mucosa.
al´ba [TA] white substance: the white nervous tissue, constituting the conducting portion of the brain and spinal cord; it is composed mostly of myelinated nerve fibers arranged in anterior, posterior, and lateral funiculi.
interme´dia latera´lis medul´lae spina´lis [TA] lateral intermediate substance of spinal cord: the gray substance of the spinal cord that intervenes between the central intermediate substance, the intermediate column, and the anterior and posterior columns.
Some of the fibers pass into the anterior commissure (pars olfactoria) to the olfactory tract of the opposite side where they end partly within the granular layer and partly in the neighborhood of the glomeruli of the olfactory bulb, thus connecting the bulbs of the two sides.
The trigonum olfactorium, anteriorperforatedsubstance and the adjoining part of the septum pellucidum are important primary olfactory centers, especially for olfactory reflexes; in these centers terminate many axons from the mitral cells of the olfactory bulb.
The most direct path, the tractus olfactomesencephalicus (basal olfactory bundle of Wallenburg), is supposed to arise from cells in the gray substance of the olfactory tract, the olfactory trigone, the anteriorperforatedsubstance and the adjoining part of the septum pellucidum.
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