Trigone of the lateral ventricle
The lateral ventricles are the two largest ventricles of the brain and contain cerebrospinal fluid. Each cerebral hemisphere contains a lateral ventricle, known as the left or right lateral ventricle, respectively.
Each lateral ventricle resemb ...
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Trigone of the urinary bladder
The trigone of urinary bladder (also known as the vesical trigone) is a smooth triangular region of the urinary bladder formed by the two ureteric orifices and the internal urethral orifice. Between the ureteric openings, there is a fold of muc ...
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Hypoglossal trigone
In the upper part of the medulla oblongata, the hypoglossal nucleus approaches the rhomboid fossa
The rhomboid fossa is a rhombus-shaped depression that is the anterior part of the fourth ventricle. Its anterior wall, formed by the back of the p ...
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Olfactory trigone
The olfactory trigone is a small triangular area in front of the anterior perforated substance.
Its apex, directed forward, occupies the posterior part of the olfactory sulcus, and is brought into view by throwing back the olfactory tract
The ...
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Vagal trigone
The vagal trigone (ala cinerea) is a triangular eminence upon the rhomboid fossa produced by the underlying dorsal nucleus of vagus nerve.
The vagal trigone is separated from the area postrema by a narrow strip of thickened ependyma
The epend ...