After his bath but before getting dressed, a 4-year-old boy was playing with his puppy. The boy’s penis was bitten by the puppy, and the deep dorsal vein was injured. The damaged vein is:
## **Core Concept**
The question tests knowledge of penile anatomy, specifically the venous drainage system. The penis has a complex venous drainage system that includes superficial and deep veins. The deep dorsal vein plays a crucial role in draining the erectile tissue.
## **Why the Correct Answer is Right**
The deep dorsal vein of the penis is a key vessel involved in the venous drainage of the corpora cavernosa, which are the erectile tissues of the penis. Injury to this vein, as in the case of a bite wound, can lead to significant bleeding and potentially long-term complications. The deep dorsal vein is located on the dorsum of the penis, beneath the deep fascia, and drains into the prostatic venous plexus.
## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it does not accurately represent the deep dorsal vein or its typical anatomical course and termination.
- **Option B:** This option is incorrect as it likely refers to a different venous structure or an incorrect location that does not match the description of the deep dorsal vein.
- **Option D:** This option is incorrect because it does not correspond with the anatomical details of the deep dorsal vein of the penis.
## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the venous drainage of the penis involves both superficial and deep systems. The deep dorsal vein is critical for the drainage of the corpora cavernosa, and its injury can affect erectile function. Understanding the anatomy of penile veins is essential for managing penile trauma.
## **Correct Answer:** . **Dorsal vein**