| ventriculus quartus | A cavity of irregular tentlike shape extending from the obex rostralward to its communication with the sylvian aqueduct, enclosed between the cerebellum dorsally and the rhombencephalic tegmentum ventrally, having a rhomboid-shaped floor (rhomboid fossa) and a tentlike roof which in its caudal part is formed by the tela choroidea and the posterior medullary velum, in its middle part by the white matter of the cerebellum, and in its narrowing rostral part (recessus superior) by the anterior medullary velum. The fourth ventricle reaches its greatest width at the pontomedullary transition, where it expands laterally behind the cerebellar peduncles into the spoutlike lateral recess, and its greatest height at the fastigial recess, which reaches up into the cerebellar white matter. Direct communication of the brain's ventricle system and the subarachnoid space is established at the level of the fourth ventricle by a median opening in the tela choroidea, the medial aperture of Magendie's foramen, which opens into the cerebellomedullary cistern, and on both sides by the lateral aperture or foramen of Luschka, which connects the lateral recess with the interpeduncular cistern. Synonym: ventriculus quartus, ventricle of rhombencephalon. (05 Mar 2000) |
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| ventriculus quintus | A slitlike, fluid-filled space of variable width between the left and right transparent septum, which occurs in less than 10% of human brains and may communicate with the third ventricle. Synonym: cavum septi pellucidi, Duncan's ventricle, fifth ventricle, pseudocele, pseudoventricle, sylvian ventricle, ventricle of Sylvius, ventriculus quintus, Vieussens' ventricle, Wenzel's ventricle. (05 Mar 2000) |
| ventriculus sinister | <anatomy> The muscular chamber of the heart which accepts blood from the left atrium and ejects it into the aorta to the systemic circulation. (27 Sep 1997) |
| ventriculus terminalis | A dilation of the central canal of the spinal cord at the tip of the medullary cone. Synonym: ventriculus terminalis. (05 Mar 2000) |
| ventriculus tertius | 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 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. In lateral profile, the third ventricle exhibits a number of recesses: in its floor, from before backward, 1) the preoptic 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 mamillary or inframamillary recess caused by the protrusion of the mamillary bodies into the ventricle. From its dorsocaudal corner, the pineal recess extends caudally into the pineal stalk. Synonym: ventriculus tertius, diacele, ventricle of diencephalon. (05 Mar 2000) |
| ventricular septal defect |
A whole in the septum separating the ventricles of the heart. This permits blood to flow from the left ventricle to the right ventricle and to recirculate through the pulmonary artery and the lungs. The most common heart defect present at birth, treatment consists of surgery to repair the defect usually early in childhood.
출처: kid-power.org/definitions.html
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| ventricular septal defect |
a hole between the two ventricles - the pumping chambers of the heart.
출처: www.childrens-heart-fed.org.uk/terms.htm
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| ventricular fibrillation |
A serious and dangerous variant of ventricular tachycardia, often the causative agent of death. Ventricular fibrillation can be effectively terminated by applying an electrical shock to the chest cavity over the heart region. Thus, when a television episode shows a doctor holding a set of paddles in each hand and delivering jolts of electricity into the body of an unconscious patient, you are witnessing an attempt to eliminate ventricular fibrillation. ...
출처: www.barnesjewish.org/groups/default.asp
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| ventricular fibrillation |
(V-Fib) A lethal arrhythmia characterized by the rapid, chaotic movements of the heart muscle that causes the heart to stop functioning and leads quickly to cardiac arrest.
출처: www.ect-hk.com/ect_glossary_bot.html
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| ventricular septal defect |
Hole in the heart...specifically a residual communication between the two lower heart chambers. The higher blood pressure is usually on the red (or left) side of the heart, so the blood flow across the defect is towards the lower pressure (right) side. In some complex congenital defects the pressure and flow are reversed. VSDs vary in size and location. Repair depends on the anatomy and the location of the defect.
출처: www.cardioassoc.com/patient_pgs/glossary.asp
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