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The same author thus concluded that the term CA4 should be abandoned and that the zone should be regarded as the polymorphic layer of the dentate gyrus [13] (the area dentata of Blackstad (1956)). The polymorphic layer is often called the hilus or hilar region. [14]
Diagram of a Timm-stained cross-section of the mouse hippocampus. The hippocampal subregion CA3–CA4 is indicated in black, stippled, and hatched areas. Black areas: suprapyramidal (SP), intra- and infrapyramidal (IIP) and hilar (CA4) mossy fiber terminal fields originating from the dentate gyrus. Stippled area: strata oriens (OR) and radiatum ...
cortex, outer region Latin cortex, bark of a tree corticosteroid: cost-of or pertaining to the ribs: Latin costa, rib costochondral: cox-of or relating to the hip, haunch, or hip-joint Latin coxa, hip coxopodite: crani(o)-belonging or relating to the cranium: Latin cranium, from Greek κρᾱνίον (krāníon), cranium, skull, bones enclosing ...
Topologically, the surface of a cerebral hemisphere can be regarded as a sphere with an indentation where it attaches to the midbrain. The structures that line the edge of the hole collectively make up the limbic system (Latin limbus = border), with the hippocampus lining the posterior edge
A black hole is a region of spacetime where gravity is so strong that nothing, not even light, can escape it. [2] Albert Einstein's theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. [3] [4] The boundary of no escape is called the event horizon.
Recurrent somatic fusions of the two genes, NGFI-A–binding protein 2 and STAT6, located at chromosomal region 12q13, have been identified in solitary fibrous tumors. [ 7 ] This PA chest radiograph demonstrates an abnormal contour in the right hilar region, with visualization of the pulmonary vessels through the mass (the hilar overlay sign ...
Sagittarius A*, abbreviated as Sgr A* (/ ˈ s æ dʒ ˈ eɪ s t ɑːr / SADGE-AY-star [3]), is the supermassive black hole [4] [5] [6] at the Galactic Center of the Milky Way.Viewed from Earth, it is located near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic, [7] visually close to the Butterfly Cluster (M6) and Lambda Scorpii.
A black hole with modest angular momentum has an ergosphere with a shape approximated by an oblate spheroid, while faster spins produce a more pumpkin-shaped ergosphere. The equatorial (maximal) radius of an ergosphere is the Schwarzschild radius, the radius of a non-rotating black hole. The polar (minimal) radius is also the polar (minimal ...