Short answer is that the bulbospongious muscle at the base of the penis forces ejaculate out through rhythmic contractions. Ejaculation is usually the last part of sexual stimulation, and happens under the control of the sympathetic nervous system. It is followed by a refractory period, in which further stimulation is nearly impossible.
http://dictionary.reference.com/browse/ejaculatory
Ejaculatory incompetence: the inability to ejaculate within the vagina despite a firm erection and relatively high levels of sexual arousal.
Yes.
Urethra
The vas deferens carries the sperm to the ejaculatory ducts.
The small tube that connects the epididymis and the ejaculatory duct is called the vas deferens. Its main function is to transport sperm from the epididymis to the ejaculatory duct, where it mixes with other fluids to form semen before ejaculation.
In order for a female to become pregnant, there must be either pre-ejaculatory fluids or ejaculatory fluids that come in contact with her vagina.
pre ejaculatory fluids
Conducts the release of the sperm out of the male's system
it holds sperm or stores the sperm and it then it secretes to the ejaculatory ducts....
it holds sperm or stores the sperm and it then it secretes to the ejaculatory ducts....
Ejaculatory duct