What are the primary sex organs of the male reproductive system?

Answer 1

The primary male sexual organs are the penis and the testes. The prostate gland and the seminal vesicles also play a major role. The prostate gland produces most of the fluid secreted. The testes only produce a minor part of the fluid. The seminal vesicles are where the sperm and fluids from the prostate gland and other nearby glands mix. The seminal vesicles are also responsible for making the semen squirt. That is where the pressure builds up at the time of orgasm.

Of course, the vas deferens, now known as vas ductus in medical literature, are also necessary, since they are the ducts needed to move the sperm from the testes to the seminal vesicles. When a man gets a vasectomy, these are the tubes that are cut. Nowadays, an "open" vasectomy is preferred, where the lower ends are left open, while the upper ends are sealed off with sutures. That way, the semen leaks into the body and does not back up and cause a painful condition. The seminal vesicles are located inside the spermatic cords. These cords have an outer layer known as the pampiniform plexus or tunic, which is full of fine blood vessels. Then, inside that, there are the cremaster muscles, a vein, an artery, a nerve, and the vas ductus. The cremaster muscles are what pull the testes inside the body when they are cold.