. Journal of anatomy. I am inclined to thinkthese crests rather than ridges, continuous with each other, are morecommon in children than adults. The young bladder shows, therefore,ureteric crests; the adult bladder ureteric ridges continuous with eachother. Varying Direction of Base of Bladder. Rough measurements of the angle of general direction in which thetrigone looks, or failing this the base of the bladder, have been made insome of these specimens, and is found to vary according to the followingdiagram. The horizontal is taken with the subject in the dorsal positionin order that the angl
. Journal of anatomy. I am inclined to thinkthese crests rather than ridges, continuous with each other, are morecommon in children than adults. The young bladder shows, therefore,ureteric crests; the adult bladder ureteric ridges continuous with eachother. Varying Direction of Base of Bladder. Rough measurements of the angle of general direction in which thetrigone looks, or failing this the base of the bladder, have been made insome of these specimens, and is found to vary according to the followingdiagram. The horizontal is taken with the subject in the dorsal positionin order that the angles may be co-ordinated with cystoscope. This variation of direction of the base, or trigone of the bladder, is of The Form of the Uriiuiry Bladder 373 great imijortance in cystoscopy. The best view I ever had with a cysto-scope was in an elderly man, in whom I held the cystoscope nearly \ertical;on the other hand, in many cases it is necessary, in order to see thetrigone, to hold the cystoscope below the (<) (5J (6)(18) Fig. 6. —Represents the angle which the trigone, or base ofbladder, makes with a known horizon. The figures in brackets refer to individual casts. The angle which the ureteric ridges or crests make with each other orthe sagittal plane vary, but I have not had time to go into the measure-ments yet. General Considerations relative to the Form of theBladder in the Adult. Nos. 2, 3, 5, 6, 9, and 16 may be considered to belong to types usuallydescribed. Nos. 7, 9 and 12 are more cubical in shape than types usually described. Nos. 7, 10 (especially), 11, 13 (especially) and 15 show either unilateralor bilateral pararectal fossae. Nos. 3, G, 7, and 11 are the only ones which are approximately symmetrical. Nos. 4, 5, 6, 8, 10, 12 and 13, 15 and 16 show more of the bladder onthe left side than on the right. Nos. 9 and 11 show more of the bladder on the right side than on the left. The following conclusions may therefore be deduced from the foregoingobse
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectanatomy, bookyear1867
