Which Part of Sperm Enters Egg in Humans?

In humans, the sperm enters the egg to fertilize it. However, not all parts of the sperm enter the egg. Let's discuss which part of the sperm enters the egg in detail.

Structure of Sperm

A sperm cell consists of three main parts:

1. Head: The head of the sperm contains the genetic material required for fertilization.

2. Middle Piece: The middle piece of the sperm contains mitochondria, which provides energy for the sperm to swim.

3. Tail: The tail of the sperm helps it move towards the egg.

Fertilization Process

During fertilization, the sperm swims through the female reproductive tract towards the egg. The acrosome, a structure at the top of the sperm's head, contains enzymes that help the sperm penetrate the egg's outer layer.

Once the sperm reaches the egg, it attaches to the zona pellucida, a thick layer of proteins surrounding the egg. The sperm then releases its enzymes to create a hole in the zona pellucida, allowing the sperm to penetrate the egg's outer layer.

Which Part of Sperm Enters the Egg?

During fertilization, only the head of the sperm enters the egg. The middle piece and tail stay outside the egg.

The sperm's head contains genetic material required for fertilization, which combines with the egg's genetic material to form a new, unique embryo.

Conclusion

In summary, during fertilization, only the head of the sperm enters the egg. The middle piece and tail stay outside the egg. The sperm's head contains the genetic material required for fertilization, which combines with the egg's genetic material to form a new, unique embryo.

Only head, the part that contains the enzymes(acrosome) and the nucleus (inside the head)