The structures that control the flow of urine from the urinary bladder to the urethra are the Sphincters (D).

Here's a step-by-step explanation:

1. The kidneys filter the blood to produce urine, which then travels down the ureters.
2. The urine is stored in the urinary bladder.
3. When the bladder is full, the urine needs to be expelled from the body. This is where the sphincters come in.
4. There are two sphincters (internal and external) at the base of the bladder that control the release of urine into the urethra. The internal sphincter is involuntary, meaning it opens without your control. The external sphincter is voluntary, meaning you decide when to open it.
5. When both sphincters open, urine flows from the bladder into the urethra.
6. The urine then exits the body through the urethra.

So, the correct answer is D. Sphincters.

Question

The structures that control the flow of urine from the urinary bladder to the urethra are the Sphincters (D).

Here's a step-by-step explanation:

1. The kidneys filter the blood to produce urine, which then travels down the ureters.
2. The urine is stored in the urinary bladder.
3. When the bladder is full, the urine needs to be expelled from the body. This is where the sphincters come in.
4. There are two sphincters (internal and external) at the base of the bladder that control the release of urine into the urethra. The internal sphincter is involuntary, meaning it opens without your control. The external sphincter is voluntary, meaning you decide when to open it.
5. When both sphincters open, urine flows from the bladder into the urethra.
6. The urine then exits the body through the urethra.

So, the correct answer is D. Sphincters.

Knowee AI · Accepted Answer

The structures that control the flow of urine from the urinary bladder to the urethra are the Sphincters (D).

Here's a step-by-step explanation:

1. The kidneys filter the blood to produce urine, which then travels down the ureters.
2. The urine is stored in the urinary bladder.
3. When the bladder is full, the urine needs to be expelled from the body. This is where the sphincters come in.
4. There are two sphincters (internal and external) at the base of the bladder that control the release of urine into the urethra. The internal sphincter is involuntary, meaning it opens without your control. The external sphincter is voluntary, meaning you decide when to open it.
5. When both sphincters open, urine flows from the bladder into the urethra.
6. The urine then exits the body through the urethra.

So, the correct answer is D. Sphincters.

What structures control the flow of urine from the urinary bladder to the urethra? A. Ureters B. Kidneys C. Rugae D. Sphincters

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