Crura of penis is supplied by ?
**Core Concept**
The crura of the penis are paired structures that form the base of the penis. They are composed of erectile tissue and play a crucial role in the male reproductive system.
**Why the Correct Answer is Right**
The crura of the penis are supplied by branches of the internal iliac artery, specifically the internal pudendal artery. This artery gives rise to the artery of the penis, which further divides into the dorsal and cavernosal arteries. The cavernosal arteries are responsible for supplying blood to the erectile tissue of the penis, including the crura. The sensory innervation of the crura is provided by the dorsal nerve of the penis, which is a branch of the pudendal nerve.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the blood supply of the crura of the penis.
**Option B:** This option is incorrect because it does not specify the correct artery responsible for supplying the crura.
**Option C:** This option is incorrect because it refers to the blood supply of the glans penis, not the crura.
**Clinical Pearl / High-Yield Fact**
The internal pudendal artery is a branch of the internal iliac artery, and it is responsible for supplying blood to the external genitalia, including the penis and clitoris.
**Correct Answer: D. The internal pudendal artery via the artery of the penis.**