So what can you do? Well, you don't have to keep swallowing. Consequently, your husband's ejaculate is more concentrated these days than it was when you first started blowing him 25 years ago, ANB, something that could impact taste and " mouthfeel," as they say in junk food R&D. A small amount of fluid is secreted by the bulbourethral and urethral glands this is a thick, clear, lubricating protein commonly known as mucus.Īnyway, ANB, the older a man gets, the less of all of that-the less fructose (a sweetener!), amino acids, citric acid, phosphorus, potassium, sodium, glycerylphosphorylcholine, and that "thick, clear, lubricating protein commonly known as mucus," etc.-he produces. The prostate gland contributes about 30 percent of the seminal fluid the constituents of its secretions are mainly citric acid, acid phosphatase, calcium, sodium, zinc, potassium, protein-splitting enzymes, and fibrolysin (an enzyme that reduces blood and tissue fibres). Fluids contributed by the seminal vesicles are approximately 60 percent of the total semen volume these fluids contain fructose, amino acids, citric acid, phosphorus, potassium, and hormones known as prostaglandins. During the process of ejaculation, liquids from the prostate gland and seminal vesicles are added, which help dilute the concentration of sperm and provide a suitable environment for them. The ampulla secretes a yellowish fluid, ergothioneine, a substance that reduces (removes oxygen from) chemical compounds, and the ampulla also secretes fructose, a sugar that nourishes the sperm. They then pass through a long tube, called the ductus deferens, or vas deferens, to another storage area, the ampulla. After emerging from the testes, sperm are stored in the epididymis, in which secretions of potassium, sodium, and glycerylphosphorylcholine (an energy source for sperm) are contributed to the sperm cells. As sperm travel through the male reproductive tract, they are bathed in fluids produced and secreted by the various tubules and glands of the reproductive system. In the sexually mature human male, sperm cells are produced by the testes (singular, testis) they constitute only about 2 to 5 percent of the total semen volume.