What is Vesica Urinaria?

What is Vesica Urinaria?

The Latin phrase for “urinary bladder” is vesica urinaria, and the term vesical or prefix vesico – appear in connection with associated structures such as vesical veins. The modern Latin word for “bladder” – cystis – appears in associated terms such as cystitis (inflammation of the bladder).

What 3 openings form the trigone?

In the bladder base is a triangular area: the trigone. The trigone has a flattened appearance with a smooth epithelial covering. The corners of the trigone are formed by three orifices: the paired ureteral orifices and the internal urethral orifice.

What is a trigone in anatomy?

The trigone is a triangular portion of the bladder floor bordered (ventrally) by the internal urethral opening or bladder neck and (dorsolaterally) by the orifices of the right ureter and left ureter.

What are the surfaces of the urinary bladder?

The bladder has four anatomical surfaces: superior, inferior, right inferolateral, and left inferolateral. It also has four parts: Body, which is bounded anteriorly by the apex and the fundus posteriorly.

How big is the bladder in inches?

As the ureters — two tubes that expel urine from the kidneys to the bladder — fill the bladder, the muscle wall thins and the bladder moves upward, toward the abdominal cavity. This stretching can increase the size of the bladder from about 2 inches to more than 6 inches long, depending on the amount of liquid.

What is the bladder trigone?

The trigone is the neck of the bladder. It’s a triangular piece of tissue located in the lower part of your bladder. It’s near the opening of your urethra, the duct that carries urine from your bladder outside of your body. When this area becomes inflamed, it’s known as trigonitis.

What contains the trigone?

There is a triangular area, called the trigone, formed by three openings in the floor of the urinary bladder. Small flaps of mucosa cover these openings and act as valves that allow urine to enter the bladder but prevent it from backing up from the bladder into the ureters.

What is the hypoglossal trigone?

The hypoglossal nucleus is a cranial nerve nucleus, found within the medulla. Being a motor nucleus, it is close to the midline. In the open medulla, it is visible as what is known as the hypoglossal trigone, a raised area (medial to the vagal trigone) protruding slightly into the fourth ventricle.

What part of the bladder comprises the Posteroinferior portion?

Figure 2. The ilium forms the large, fan-shaped superior portion, the ischium forms the posteroinferior portion, and the pubis forms the anteromedial portion.

When the bladder is empty its lining is thrown into the folds known as?

The inner lining of the urinary bladder is a mucous membrane of transitional epithelium that is continuous with that in the ureters. When the bladder is empty, the mucosa has numerous folds called rugae. The rugae and transitional epithelium allow the bladder to expand as it fills.

Can the bowel press on the bladder?

Large amounts of stool in the colon can put pressure on the bladder which can cause the bladder to not fill as much as it should, or cause the bladder to contract when the bladder is not supposed to contract. This large amount of stool can also cause the bladder to not empty well.