Semen
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Semen, also known as seminal fluid, is a bodily fluid that contains spermatozoa from the male gonads of animals. In humans and placental mammals, seminal fluid is ejaculated through the penis via the
Spermatozoa, in this case human, are a primary component of normal semen, and the agents of fertilization of female ova.
Human semen in a Petri dish
Semen stain on carpet observed with and without ultraviolet light
Urethra
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The urethra is the tube that transports urine from the bladder to the urethral meatus of the penis or vulva in placental mammals. In males, it also transports semen through the penis during ejaculatio
Semen
…fluid that contains spermatozoa from the male gonads of animals. In humans and placental mammals, seminal fluid is ejaculated through the penis via the urethra. This fluid contains proteolytic and other enzymes as well as fructose, which together promote the survival of spermatozoa and provide a medium through…
The urethra transports urine from the bladder to the outside of the body. This image shows (a) a human female urethra and (b) a human male urethra.
Micrograph of urethral cancer (urothelial cell carcinoma), a rare problem of the urethra.
Male urethral opening on glans penis
Female urethral opening within vulval vestibule