What is the bladder posterior to?
The urinary bladder is a temporary storage reservoir for urine. It is located in the pelvic cavity, posterior to the symphysis pubis, and below the parietal peritoneum.
What is inferior to the urinary bladder?
Another separate muscle, the external urethral sphincter, surrounds the urethra just inferior to the bladder and helps to control and delay urination through its contraction. The external urethral sphincter is a skeletal muscle and therefore allows for the voluntary control of the urination reflex.
What structures support the urinary bladder?
The body of the bladder receives inferior support from the pelvic diaphragm in females or prostate in males and lateral support from the obturator internus and levator ani muscles. At its apex, the medial umbilical ligament, or the urachal remnant, courses along the anterior abdominal wall to the umbilicus.
Is urinary bladder posterior to uterus?
The uterus is located between the urinary bladder anteriorly and the rectum posteriorly.
What shape is your bladder?
When empty, the bladder is about the size and shape of a pear. Urine is made in the kidneys and travels down two tubes called ureters to the bladder. The bladder stores urine, allowing urination to be infrequent and controlled. The bladder is lined by layers of muscle tissue that stretch to hold urine.
What organ is next to bladder?
Posteriorly, the anterior wall of the vagina sits behind the bladder in females. In males, the rectum is located posterior to the bladder. Inferiorly, the muscles of the pelvic diaphragm support the bladder.
What is the main function of the bladder?
Bladder. This triangle-shaped, hollow organ is located in the lower abdomen. It is held in place by ligaments that are attached to other organs and the pelvic bones. The bladder’s walls relax and expand to store urine, and contract and flatten to empty urine through the urethra.
What is the anatomy of the urinary bladder?
Gross anatomy. The bladder has a triangular shape with a posterior base, an anterior apex and an inferior neck with two inferolateral surfaces. It is lined with a rough, trabeculated transitional cell epithelium except at the trigone.
Which is part of the bladder contains the trigone?
The fundus is the base of the bladder, which is formed by the posterior wall and contains the trigone of the bladder, and is lymphatically drained by the external iliac lymph nodes. The trigone is the structure that contains the outlet (urethra) of the bladder.
Where is the fundus of the urinary bladder located?
Its anterior surface “is in contact with about the lower two-thirds of that part of the abdominal wall which lies between the symphysis pubis and the umbilicus” (Symington (* 177). Its fundus is clothed with peritoneum as far as the level of the internal orifice of the urethra.
How is the urinary bladder connected to the umbilicus?
It is connected to the umbilicus by the median umbilical ligament (a remnant of the urachus). Fundus (or base) – located posteriorly. It is triangular-shaped, with the tip of the triangle pointing backwards. Neck – formed by the convergence of the fundus and the two inferolateral surfaces. It is continuous with the urethra.
What makes up the posterior surface of the bladder?
The posterior surface of the bladder in men is due to the rectum, seminal vesicles and ampullae of the ovary ducts, and the bottom to the prostate gland. In women, the posterior surface of the bladder touches the anterior wall of the cervix and vagina, and the bottom – with the urogenital diaphragm.
Where is the bladder located in a female?
The bladder is situated just posterior to the pubic symphysis. Posteriorly, the anterior wall of the vagina sits behind the bladder in females. In males, the rectum is located posterior to the bladder. Inferiorly, the muscles of the pelvic diaphragm support the bladder.
The fundus is the base of the bladder, which is formed by the posterior wall and contains the trigone of the bladder, and is lymphatically drained by the external iliac lymph nodes. The trigone is the structure that contains the outlet (urethra) of the bladder.
Is the urinary bladder anterior to the abdominal wall?
The space anterior to the bladder and behind the abdominal wall is called retropubic space (space of retzius). The space enables varius filling conditions of the urinary bladder. The bladder is adjacent to the small intestine and sigmoid colon (dorsal, towards the abdomen). The iliac vessels are lateral to the bladder.