Semenalso known as seminal fluidis an organic fluid that may contain spermatozoa. It is secreted by the gonads sexual glands and other sexual organs of male or hermaphroditic animals and can fertilize female ova. In humans, seminal fluid contains several components besides spermatozoa: proteolytic and other enzymes as well as fructose are elements of seminal fluid which promote the survival of spermatozoa, and provide a medium through which they can move or "swim".
In biological terms sexual reproduction involves the union of gametes - the sperm and the ovum - produced by two parents. Each gamete is formed by meiosis see Chapter 3. This means each contains only half the chromosomes of the body cells haploid.
Reproduction is the process by which organisms make more organisms like themselves. But even though the reproductive system is essential to keeping a species alive, unlike other body systems, it's not essential to keeping an individual alive. In the human reproductive process, two kinds of sex cells, or gametes GAH-meetzare involved.
Ejaculationthe release of sperm cells and seminal plasma from the male reproductive system. Ejaculation takes place in two phases: in the first, or emission, stage, sperm are moved from the testes and the epididymis where the sperm are stored to the beginning of the urethraa hollow tube running through the penis that transports either sperm or urine; in the second stage, ejaculation proper, the semen is moved through the urethra and expelled from the body. Sperm cells that are stored in the male body are not capable of self-movement because of the acidity of the accompanying fluids. When the sperm receive fluids, called seminal plasmafrom the various internal accessory organs prostate glandejaculatory ductsseminal vesiclesand bulbourethral glandsthe acidity decreases.
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The male reproductive system includes external penis, scrotum, epididymus, and testes and internal accessory organs. These external structures are the penis, scrotum, epididymis, and testes. Male Reproductive System : Lateral view of male reproductive system with organs labeled.
The external structures of the male reproductive system are the penis, the scrotum and the testicles. Penis — The penis is the male organ for sexual intercourse. It has three parts: the root, which attaches to the wall of the abdomen; the body, or shaft; and the glans, which is the cone-shaped end of the penis.
An option for men who have a low-risk prostate cancer that does not cause serious symptoms or is unlikely to spread to other parts of the body. The prostate cancer is monitored through regular medical check-ups and treatments are only given if the prostate cancer progresses. An infection in the prostate gland which causes fever, severe pain in the lower back and genital area and burning, urgent and frequent urination.