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The bladder
The spleen. It acts as a filter for blood, but also, as you said, is a reservoir for oxygen rich blood.
The kidneys process the urine and the bladderholds it.
The Kidneys.Kidneys don't hold urine they produce urine which is then stored in the bladder.
The kidneys
the stomach
The renal pelvis is the reservoir in the kidney that collects the urine.
The spleen. It acts as a filter for blood, but also, as you said, is a reservoir for oxygen rich blood.
None - BUT Urine from kidneys.
The bladder serves as a temporary reservoir for urine before it is eliminated from the body.
Your bladder acts as a reservoir to store urine until such time as it is convenient to discharge it. Although there would be the inconvenience and embarassment of the continual discharge of urine that would occur without a bladder, the body can function quite well without it.
The kidneys process the urine and the bladderholds it.
The kidneys
The urinary bladder is the organ that collects urine excreted by the kidneys prior to disposal by urination. (Wikipedia)For the source and more detailed information concerning your request, click on the related links section (Wikipedia) indicated directly below thisanswer section.
The urinary bladder stores the urine in the frog.
Urine is produced in the kidneys. It is the 'waste' filtered from the blood.
The kidneys produce urine.
The ureter leads urine out of the kidney and into the bladder.