. Text-book of anatomy and physiology for nurses. al orifice is guarded by circular muscle fibersforming a sphincter—the sphincter vesicce (sphincter of the bladder).The openings of the ureters are about one inch from the internalorifice, and the same distance apart, thus these three openingsmark the corners of a triangle at the base of the bladder, calledthe trigone. The urethra is a fibro-muscular canal lined with mucous mem-brane. It begins at the internal orifice of the bladder, ends at the 283 284 ANATOMY AND PHYSIOLOGY FOR NURSES. external orifice or meatus urinarius, and conducts the ur
. Text-book of anatomy and physiology for nurses. al orifice is guarded by circular muscle fibersforming a sphincter—the sphincter vesicce (sphincter of the bladder).The openings of the ureters are about one inch from the internalorifice, and the same distance apart, thus these three openingsmark the corners of a triangle at the base of the bladder, calledthe trigone. The urethra is a fibro-muscular canal lined with mucous mem-brane. It begins at the internal orifice of the bladder, ends at the 283 284 ANATOMY AND PHYSIOLOGY FOR NURSES. external orifice or meatus urinarius, and conducts the urine from thebody. The female urethra is about one and one-half inches long andI /4 inch wide, but is very distensible. It curves slightly downwardtoward the external meatus. Clinical note.—The catheter should pass a little upward after entering theurethra (Fig. 199). A urethral caruncle is an exceedingly painful little tumor pro-jecting from the urethral mucous membrane. It is a collection ofsensitive blood-vessels and nerves. Bladder Uterus. Urethra Anus (rectum distended) Fig. ic -Pelvic Organs, Female Pelvis (Holden),Dotted lines indicate peritoneum. The prostate gland is situated at the base of the male Uadder,immediately in front of the rectum and surrounding the first portionof the urethra. Clinical Note.—When empty, the bladder lies entirely in the pelvis, but if itcontains more than eight ounces it begins to rise into the abdomen. It has beenknown to extend as high as the umbilicus. Surgical note.—The peritoneum covers the vertex and a portion of theposterior surface only; therefore, the bladder may be entered in front through anincision just above the symphysis pubis without wounding the peritoneum. THE PELVIC ORGANS. 285 THE UTERUS AND APPENDAGES. These constitute the internal generative appendages are the uterine (or Fallopian) tubes and theovaries (Fig. 200). The Uterus. The uterus, or womb, is situated between the bladder and theupper part of the
Size: 1616px × 1547px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookd, booksubjectanatomy, booksubjectphysiology
