Question

what is sexual intercourse or mating in humans . explain in detail?

Answer 1

Answer:

Sexual Intercourse Definition

Sexual intercourse, or copulation, is the deposition of sperm into a female via a male intromittent organ. In humans, the intromittent organ is the penis, and sperm are deposited into the vagina, where they make their way to towards the uterus to fertilize an egg. However, sexual intercourse is almost as varied as the animal kingdom itself, and occurs in some form or another in most of the large groups of organisms. From the smallest organisms to the largest, sexual intercourse is simply the process of delivering sperm into the female, although the process varies widely.

As opposed to external fertilization, internal fertilization through sexual intercourse increases the change that fertilization will occur among the gametes. During external fertilization, gametes are broadcast into the environemtn, and must find their way to each other through shear numbers. Organsims that reproduce using this method must time the release of their gametes to maximize the production of new offspring. Sexual intercourse not only localizes the deposit of sperm, but greatly reduces the distance and area a sperm must cover to find an egg. Beyond the penis or other intromittent organ entering the female and depositing sperm, the process of sexual intercourse varies widely by animal. Below are a few examples.

Examples of Sexual Intercourse

Sharks

Male sharks have long intromittent organs that hang near their cloaca, or urogenital opening. During shark sexual intercourse, the male will wrap himself around the female or otherwise arrange his body to insert his clasper into the female’s cloaca. The tip of the clasper has hooks and spines, which anchor the clasper inside of the female while the male ejaculates his sperm into the female’s cloaca. Sharks use a special muscular sac under the skin to flush sperm out of the clasper with seawater it collects near the pelvic fins. The sperm must then make their way up her reproductive tract, to eggs descending from her ovaries. Fertilization will occur, and each zygote will grow into a new shark.