**Question:** All are related to posterior surface of urinary bladder EXCEPT

A. Denervation
B. Denervation
C. Denervation
D. Denervation

**Core Concept:** The posterior surface of the urinary bladder is a significant aspect in understanding its anatomy and physiology. The urinary bladder is innervated by the pelvic nerves, primarily the S2, S3, and S4 spinal nerves. Denervation refers to the loss of function due to the absence of innervation.

**Why the Correct Answer is Right:** The correct answer, **A, B, C, and D**, all refer to denervation. Denervation is the process where the loss of function occurs due to the absence of innervation. In this context, it is incorrect as all options are related to denervation, which is not an exception to the posterior surface of the urinary bladder. The bladder is innervated by the pelvic nerves, and denervation would affect this innervation, making it incorrect for the given question.

**Why Each Wrong Option is Incorrect:**

- Option A: Denervation refers to the loss of function due to the absence of innervation, which is not an exception to the posterior surface of the urinary bladder.
- Option B: Denervation is the process where the loss of function occurs due to the absence of innervation. This is also incorrect as it relates to the loss of function due to the absence of innervation, which is not an exception to the posterior surface of the urinary bladder.
- Option C: Denervation refers to the loss of function due to the absence of innervation, which is not an exception to the posterior surface of the urinary bladder.
- Option D: Denervation is the process where the loss of function occurs due to the absence of innervation. This is also incorrect as it relates to the loss of function due to the absence of innervation, which is not an exception to the posterior surface of the urinary bladder.

**Clinical Pearl:** The correct answer should be "innervation" or "preservation of function due to the presence of innervation." In the context of the urinary bladder, innervation by the pelvic nerves is crucial for its normal function. Denervation would result in dysfunction, not an exception, to the posterior surface of the urinary bladder.