Seminal plasma is composed of the fluid and sperms from the vas deferens (about $10 \%$  of the total), fluid from the seminal vesicles (almost $60 \%$ ), fluid from the prostate gland (about $30 \%$ ) and small amount of mucous gland secretions, especially the bulbourethral glands secretions. It contains calcium, citrate ion, phosphate ion a clotting enzyme, profibrinolysin, fructose, citrate, inositol, prostaglandins, several proteins, etc.