. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. PROSTATE GLAND. 151 liquor prostaticus is not incompatible with the existence of calculous concretions of the phosphatic species in the follicles of the gland, I have proved by repeated examination. Utriculus prostaticus. Vesicula spermatica spurin. Vesica prostatica. Sinus pocularis.— At the anterior part of the most elevated por- tion of the veru montanum, we find an open- ing in the mesial line one-third or half a line broad, leading backwards to a small bag re- sembling a bottle in figure, of variable length and brea
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. PROSTATE GLAND. 151 liquor prostaticus is not incompatible with the existence of calculous concretions of the phosphatic species in the follicles of the gland, I have proved by repeated examination. Utriculus prostaticus. Vesicula spermatica spurin. Vesica prostatica. Sinus pocularis.— At the anterior part of the most elevated por- tion of the veru montanum, we find an open- ing in the mesial line one-third or half a line broad, leading backwards to a small bag re- sembling a bottle in figure, of variable length and breadth : it is generally known by the name of the sinus pocularis, but has received Fig. a, bladder ; b, middle lobe of prostate ; c, view of the left side of the utriculus prostaticus ; d, bristle in left vas ejaculatorium. also the designations here mentioned. In most cases in which I have examined it, it forms a canal, terminating in a blind extremity, and usually is not more than three or four lines long. I have found it an inch in length. The opening, which faces obliquely forwards, will just admit the point of a small catheter or bougie. Some surgical interest is attached to this structure, because it has been stated by writers on urethral diseases that an instru- ment is liable to catch in it when an attempt is made to pass it into the bladder ; but I be- lieve this very rarely happens, as the beak of the catheter is usually kept against the an- terior surface of the urethra, when it is made to traverse the prostatic portion, and it is therefore carried well above this little pouch ; if, however, such an accident should be sus- pected to have occurred, a gentle withdrawal of the instrument and depression of the han- dle are quite sufficient to clear the impedi- ment referred to. But much physiological importance attaches to this sinus, for reasons which we shall presently see. Huschke de- scribes it in the following manner: — It com- mences by a narrow portion, r
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