Which of these statements about the kidney and urinary bladder is CORRECT?

Options

A. The kidney lies posteriorly in the abdominal cavity while the urinary bladder lies anteriorly in the pelvic cavity.
B. The kidney lies anteriorly in the abdominal cavity while the urinary bladder lies posteriorly in the pelvic cavity.
C. The kidney lies posteriorly in the abdominal cavity while the urinary bladder lies posteriorly in the pelvic cavity.
D. The kidney lies anteriorly in the abdominal cavity while the urinary bladder lies anteriorly in the pelvic cavity

Answer

To determine which statement about the kidney and urinary bladder is correct, we need to analyze the anatomical positions of both organs.

### Step-by-Step Solution:

1. **Understanding the Location of the Kidneys:**
- The kidneys are a pair of organs located along the posterior muscular wall of the abdominal cavity. They are situated in the retroperitoneal space, which means they lie behind the peritoneum (the lining of the abdominal cavity).
- The left kidney is typically positioned slightly higher than the right kidney due to the presence of the liver on the right side of the body.

2. **Understanding the Location of the Urinary Bladder:**
- The urinary bladder is a muscular sac that serves as a temporary storage reservoir for urine.
- It is located in the pelvic cavity, specifically posterior to the pubic symphysis (the joint where the left and right pubic bones meet).

3. **Analyzing the Given Statements:**
- **Option 1:** "The kidney lies posteriorly in the abdominal cavity while the urinary bladder lies interiorly in the pelvic cavity."
- This statement is correct regarding the kidney's position but incorrect about the urinary bladder's position.
- **Option 2:** "The kidney lies interiorly in the abdominal cavity while the urinary bladder lies posteriorly in the pelvic cavity."
- This statement is incorrect for both organs.
- **Option 3:** "The kidney lies posteriorly in the abdominal cavity while the urinary bladder lies posteriorly in the pelvic cavity."
- This statement is correct for the kidney but incorrect for the urinary bladder, as the bladder is not posterior but rather anterior in the pelvic cavity.
- **Option 4:** "The kidney lies interiorly in the abdominal cavity while the urinary bladder lies in the pelvic cavity."
- This statement is incorrect for the kidney's position.

4. **Conclusion:**
- The correct statement about the kidney and urinary bladder is: **"The kidney lies posteriorly in the abdominal cavity while the urinary bladder lies anteriorly in the pelvic cavity."** However, since the urinary bladder is not mentioned as anterior in the options, the closest correct option is: **"The kidney lies posteriorly in the abdominal cavity while the urinary bladder lies in the pelvic cavity."**

### Final Answer:
The correct statement is: **"The kidney lies posteriorly in the abdominal cavity while the urinary bladder lies in the pelvic cavity."**