| apex of urinary bladder | The junction of the superior and anteroinferior surfaces of the bladder, continuous above with the median umbilical ligament. Synonym: apex vesicae. (05 Mar 2000) |
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| body of urinary bladder | The portion of the bladder between the apex and fundus. Synonym: corpus vesicae urinariae. (05 Mar 2000) |
| mucosa of urinary bladder | The inner coat of the urinary bladder. Synonym: tunica mucosa vesicae urinariae. (05 Mar 2000) |
| muscular coat of urinary bladder | Muscular layer of the wall of the urinary bladder. Synonym: tunica muscularis vesicae urinariae. (05 Mar 2000) |
| serosa of urinary bladder | Serous coat of the urinary bladder; the visceral peritoneum covering the roof and lateral walls of the urinary bladder. Synonym: tunica serosa vesicae urinariae. (05 Mar 2000) |
| sphincter muscle of urinary bladder | The complete collar of smooth muscle cells of the neck of the urinary bladder which extend distally to surround the preprostatic sportion of the male urethra. There is not a comparable structure in the neck of the femoral bladder; the internal urethral sphincter may exist to prevent reflux of semen into bladder. Synonym: annulus urethralis, internal urethral sphincter, musculus sphincter vesicae, preprostate urethral sphincter, proximal urethral sphincter, sphincter muscle of urinary bladder. (05 Mar 2000) |
| neck of urinary bladder | The lowest part of the bladder formed by the junction of the fundus and the inferolateral surfaces. Synonym: cervix vesicae urinariae. (05 Mar 2000) |
| detrusor muscle of urinary bladder | The muscular coat of the bladder. Synonym: musculus detrusor urinae. (05 Mar 2000) |
| urinary bladder | A musculomembranous elastic bag serving as a storage place for the urine. Synonym: vesica urinaria, cystis urinaria, urocyst, urocystis. (05 Mar 2000) |
| fundus of urinary bladder | The fundus is formed by the posterior wall which is somewhat convex. Synonym: fundus vesicae urinariae, bas-fond, base of bladder. (05 Mar 2000) |
| vertex | 1. <anatomy> A turning point; the principal or highest point; top; summit; crown; apex. Specifically: the top, or crown, of the head. 2. <astronomy> The zenith, or the point of the heavens directly overhead. 3. <mathematics> The point in any figure opposite to, and farthest from, the base; the terminating point of some particular line or lines in a figure or a curve; the top, or the point opposite the base. Vertex of a curve, the point in which the axis pierces the surface. The principal vertex of a conic section is, in the parabola, the vertex of the axis of the curve: in the ellipse, either extremity of either axis, but usually the left-hand vertex of the transverse axis; in the hyperbola, either vertex, but usually the right-hand vertex of the transverse axis. Origin: L. Vertex, -icis, a whirl, top of the head, top, summit, from vertere to turn. See Verse, and cf. Vortex. (29 Oct 1998) |
| vertex cordis | The blunt extremity of the heart formed by the left ventricle. See: apex beat. Synonym: apex cordis, vertex cordis. (05 Mar 2000) |
| vertex corneae | The central part of the cornea, slightly thinner than the peripheral part. Synonym: vertex corneae. (05 Mar 2000) |
| vertex of cornea | The central part of the cornea, slightly thinner than the peripheral part. Synonym: vertex corneae. (05 Mar 2000) |
| vertex presentation | See: cephalic presentation. (05 Mar 2000) |