Ejaculation

Ejaculation occurs with a sexual climax during sex or masturbation or during so called "wet dreams". Pre-cum emission comes from cowper's gland with duct that opens into bulbar or mid- urethra urethra & ? Without warning. Then ejaculation occurs after semen enters urethra from ejaculatory duct, just beyond bladder neck which reflexly contracts followed by contractions of bulbocavernosus muscle.