third ventricle


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Related to third ventricle: fourth ventricle

ventricle

 [ven´trĭ-k'l]
a small cavity or chamber, as in the brain or heart.
ventricle of Arantius
1. the rhomboid fossa, especially its lower end.
fourth ventricle a median cavity in the hindbrain, containing cerebrospinal fluid.
ventricle of larynx the space between the true and false vocal cords.
lateral ventricle the cavity in each cerebral hemisphere, derived from the cavity of the embryonic tube, containing cerebrospinal fluid.
left ventricle the lower chamber of the left side of the heart, which pumps oxygenated blood out through the aorta to all the tissues of the body.
Morgagni's ventricle ventricle of larynx.
pineal ventricle an extension of the third ventricle into the stalk of the pineal body.
right ventricle the lower chamber of the right side of the heart, which pumps venous blood through the pulmonary trunk and arteries to the capillaries of the lung.
third ventricle a narrow cleft below the corpus callosum, within the diencephalon between the two thalami.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

third ven·tri·cle

[TA]
a narrow, vertically oriented, irregularly quadrilateral cavity in the midplane, extending from the lamina terminalis to the rostral opening of the mesencephalic aqueduct. This ventricle communicates at its rostrodorsal corner with each of the two lateral ventricles through the left and right interventricular foramen of Monro. Its narrow roof is formed by the tela choroidea that is attached on either side to the tenia thalami; its lateral wall is formed by the medial surface of the thalamus and, below the hypothalamic sulcus, by the hypothalamus, which also forms its floor. In lateral profile, the third ventricle exhibits a number of recesses: in its floor, from rostral to caudal, 1) the supraoptic recess in the acute angle between the base of the lamina terminalis and the dorsum of the optic chiasm, 2) the infundibular recess extending ventrally into the infundibulum but (in humans) not into the hypophysial stalk, and 3) the mammillary or inframammillary recess caused by the protrusion of the mammillary bodies into the ventricle. From its posterocaudal corner, the pineal and suprapineal recesses extend caudally in relation to the pineal gland.
Farlex Partner Medical Dictionary © Farlex 2012

third ven·tri·cle

(thĭrd ven'tri-kĕl) [TA]
A narrow, vertically oriented, irregularly quadrilateral cavity in the midplane, extending from the lamina terminalis to the rostral opening of the mesencephalic aqueduct. This ventricle communicates at its rostrodorsal corner with each of the two lateral ventricles through the left and right interventricular foramina of Monro. Its narrow roof is formed by the tela choroidea, which is attached on either side to the tenia thalami; its lateral wall by the medial surface of the thalamus and, below the hypothalamic sulcus, by the hypothalamus, which also forms its floor.
Synonym(s): ventriculus tertius [TA] .
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

third ventricle

The small, slit-like midline, fluid-filled space in the centre of the brain which communicates with the two large lateral ventricles, one in each hemisphere, and with the FOURTH VENTRICLE behind.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
Among eight CPPs with partial resection, five were diagnosed as lateral ventricle papilloma and three as third ventricle papilloma.
Our patient's tumor, located at the anterior aspect of the third ventricle, was in close proximity to the posterior and lateral aspects of the hypothalamus.
Based on the works of Dandy, exposure of the third ventricle has historically been achieved via the transcortical route.
Kwock, "Colloid cyst of the third ventricle: imaging-pathologic correlation," American Journal of Neuroradiology, vol.
Analyses of NSC-Shh cells within the lateral and third ventricles used sections from approximately -0.0 mm to -1.6 mm relative to bregma, which were sampled at least every 300 f m to reach a minimum of 50 NSC-Shh cells counted in each mouse.
To do this, we administered a single dose of 50 [micro]g/mL DNJ (1 [micro]L) into the third ventricle of HFD-fed obese mice (Figure 1).
MRI confirmed a colloid cyst of the third ventricle of 1 cm in diameter with obstruction of CSF flow (Figure ib).
(1) Efforts to visualise the patency of a third ventriculostomy begin with the detection of a flow void in the floor of the third ventricle on T2-weighted MR images and later confirmation with the use of cine 2-dimensional (2D) phase-contrast (PC) MR images.
When normal bone marrow cells that produce BDNF are injected into the third ventricle (a fluid-filled cavity in the brain) of mice that lack BDNF, they no longer have the urge to overeat, said Chan.
Gott, "Transcallosal, interfornical approaches for lesions affecting the third ventricle: surgical considerations and consequences," Neurosurgery, vol.
Most of them are found in the third ventricle at the foramen of Monroe, but they are also found in the lateral ventricle, fourth ventricle, and even outside of ventricular system.
In addition, it was observed that the third ventricle was markedly compressed and the midline was shifted to the left (Fig.