Which statement best describes the crura of the penis?

Which statement best describes the crura of the penis?

• A. Proximal, paired extensions of corpus cavernosum
• B. They are ligaments
• C. Distal expansions of corpus spongiosum
• D. Mud-shaped tendinous attachments

Answer: (D)

Crura are the two proximal legs of the erectile tissue that form the root of the penis. They are paired extensions of the corpora cavernosa that arise near the pubic bones and anchor the penis to the ischiopubic rami, providing stable attachment for the shaft. They are made of erectile tissue enveloped by tunica albuginea, not ligaments or tendinous structures. The bulb, by contrast, is the proximal expansion of the corpus spongiosum, located medially at the root. So the crura are best described as proximal, paired extensions of the corpus cavernosum, not ligaments or distal expansions of the spongiosum.

Crura are the two proximal legs of the erectile tissue that form the root of the penis. They are paired extensions of the corpora cavernosa that arise near the pubic bones and anchor the penis to the ischiopubic rami, providing stable attachment for the shaft. They are made of erectile tissue enveloped by tunica albuginea, not ligaments or tendinous structures. The bulb, by contrast, is the proximal expansion of the corpus spongiosum, located medially at the root. So the crura are best described as proximal, paired extensions of the corpus cavernosum, not ligaments or distal expansions of the spongiosum.