from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A muscle just below the surface of the perineum, used to flex the anus, stabilize the erect penis (in males), and tense the vagina (in females).
from The Century Dictionary and Cyclopedia
- n. A muscle of the penis, arising chiefly from the ischium, and inserted into the crus penis. Also called erector penis and erector clitoridis.
Sorry, no etymologies found.
In addition, the ischiocavernosus and bulbospongiosus striated muscles, which located at the penile crus, are innervated by the motor pudendal nerve.