1-5 days
Human sperm move through the female reproductive system by swimming using their tail (flagellum). They are guided by chemical signals released by the egg and the female reproductive tract, which help them to navigate towards the egg for fertilization.
Sperm is a gooey concoction used to transfer the male's reproductive cells into the female's vulva, and thereby to her eggs (the female reproductive cells). It is also the male genes that will determine the gender of a child.
through maturity of premordia germ cell
One reproductive system alone does not produce a zygote. A human zygote is made from the joining of gametes (sperm and egg) from the male and female reproductive systems.
The sperm is incompatible with the female eggs, and would not interact with it.
The structure that specifically evolved in humans for depositing sperm inside the female body internally is the penis. The penis is designed to deliver sperm through the female reproductive tract during sexual intercourse.
Fertilization typically occurs in the fallopian tube of the human female reproductive system. Sperm and egg meet and fuse to create a single cell called a zygote, which will eventually develop into an embryo.
B. A human sperm cell and a human ovum are types of gametes. Gametes are reproductive cells that fuse during fertilization to form a new organism. In the case of humans, sperm cells are the male gametes and ovum (egg) cells are the female gametes.
It's true a single sperm only has to travel a few inches, but sperm are only a thousandth of an inch themselves, so it's a long journey on their scale.
The male reproductive organ where human sperm is made is the testes, specifically in structures called the seminiferous tubules within the testes. Sperm are produced through a process called spermatogenesis within these tubules.
The female reproductive cell is the egg, or gamete. The female human reproductive cell is often referred to as ovum, or ova if plural.
The physical traits of a human sperm, such as its streamlined shape and long tail, are adaptations that help it move efficiently through the female reproductive tract to reach the egg. These traits indicate the challenging environment that the sperm must navigate in order to successfully fertilize an egg.