The urinary bladder is situated behind the Vent (Anus) on the fish. Just as it is on humans, it is there to release any unwanted waste from the body. Fish have two bladders, one is a swim bladder and the other is the urinary bladder. Do not get these mixed up. The swim bladder allows the fish swim in different densities of water and the urinary bladder is to pass urine. Fish do not use urea to get rid of their nitrogen like mammals do, but instead use NH3 Ammonia.
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The urinary bladder in fish functions to store urine before it is released from the body. It helps in regulating osmotic balance by releasing excess water and ions from the body. Additionally, the urinary bladder aids in maintaining buoyancy by adjusting the fish's overall density.
The Urogenital Opening in a fish is where sperm or eggs (depending on the sex of the fish) and urine exit the body. It is located closer to the Anal Fin, behind the anus - the opposite of mammals.
The function of the gall bladder is to store and concentrate bile secreted by the liver.the function of the air bladder is to enable the fish to float and sink in the water willingly.
A swim bladder gives a fish a abillity to float and sink, They also could store water in it like a birchir.
The ureter in a pig is responsible for transporting urine from the kidneys to the urinary bladder. It helps maintain proper kidney function by removing waste and excess fluids from the body. The ureter prevents the backflow of urine by utilizing peristaltic contractions to move urine towards the bladder.
In a fetal pig, the urinary bladder is located in the lower ventral abdominal cavity. It is not known what the thickness of the urinary bladder is in a fetal pig.
The excretory system consists of the kidneys, ureters, bladder, and urethra. Its main function is to remove waste and excess water from the body through urine excretion.