During the act known as "sexual intercourse", the male penis goes inside the female vagina, where (usually after moving back and forth for a while, to get excited), the semen (the liquid which includes the sperm cells) is deposited inside the woman's body.
Yes, cats have internal fertilization. During mating, the male cat's penis transfers sperm into the female cat's reproductive tract, where fertilization of the eggs takes place.
the penis
Yes, because in mammals, internal fertilization is done through copulation, which involves the insertion of the penis into the vagina.
Why are there generally more eggs and sperm cells produce during external fertilization thean internal fertilization
During fertilization the sperm unites with the egg. This typically occurs in the fallopian tube.
The chemical released by sperm during fertilization is an enzyme called acrosin. Acrosin helps the sperm penetrate the protective layer around the egg, facilitating fertilization.
Male donkeys and horses have a long penis to facilitate mating with the female, which allows for successful breeding. The length of the penis helps with reaching and penetrating the female's reproductive tract for fertilization to occur.
Not the least
A developing human during the first eight weeks after fertilization is known as an embryo.
Penis length is essentially unrelated to fertility. In fact, even with no penetration into the vagina, it is possible for some sperm to make their way into the uterus and fertilize an egg.
Male sperm typically moves faster during fertilization compared to female sperm.
Fertilization of the egg generally occurs in the fallopian tube, after which the fertilized egg travels to the uterus for implantation. If fertilization does not happen, the egg gets expelled through menstruation.