Urine is stored in –
**Core Concept**
The urinary bladder is a hollow, muscular organ responsible for storing urine produced by the kidneys. The bladder's capacity to hold urine is essential for maintaining normal urinary function.
**Why the Correct Answer is Right**
The correct answer is the bladder because it serves as the primary storage organ for urine in the urinary system. The bladder has a capacity of approximately 400-600 mL and is lined with a mucous membrane that helps to prevent damage from the acidic nature of urine. The muscular walls of the bladder allow it to expand and contract, facilitating the storage and eventual release of urine through the process of urination.
**Why Each Wrong Option is Incorrect**
* **Option A:** This is incorrect because the kidneys produce urine, but they do not store it. The kidneys filter waste products, excess water, and electrolytes from the blood to produce urine.
* **Option B:** This is incorrect because the ureters are muscular tubes that transport urine from the kidneys to the bladder, but they do not store urine.
* **Option C:** This is incorrect because the urethra is a tube that carries urine from the bladder to the outside of the body during urination, but it does not store urine.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that the urinary bladder is a dynamic organ that can expand and contract in response to changes in urine volume. This ability to accommodate varying amounts of urine is crucial for maintaining normal urinary function and preventing complications such as urinary retention.
**Correct Answer:** C. Bladder.