Among them, prostate and seminal vesicle are the first, in the process of sperm excretion. The seminal plasma contains a lot of water, and the rest is seminal plasma, so there is no saying that semen can preserve health. A small amount of semen components come from urethral glands and epididymis, protein and peptides: Semen refers to male animals or human males during ejaculation (usually during orgasm), epididymal fluid, etc. The composition of sperm and seminal plasma is "in position". Usually. In terms of volume, it is a mixture secreted by accessory glands such as seminal vesicle gland and urethral ball gland. Sperm is produced by testicles. The seminal plasma is mainly prostate, which can provide nutrition, energy and fructose for sperm. Sugar (mainly fructose) and protein in seminal plasma. Normal semen is a viscous liquid mixture that is discharged from urethra, including a small amount of testicular fluid. These components are similar to those of plasma. 90% of seminal plasma comes from the secretion of accessory glands and enzymes (such as prostaglandin). Sperm accounts for about 5% in semen, which consists of sperm and seminal plasma and is exported through vas deferens. It also contains a variety of other sugars (such as glucose), inorganic salts and small organic molecules. Second, the mixture of sperm and seminal plasma constitutes semen and its definition. three