What is fertilization PDF?

Fertilization is the fusion of the male and female gamete. The process involves the fusion of an oocyte with a sperm, creating a single diploid cell, the zygote, from which a new individual organism will develop.

What are the 7 steps of fertilization?

In overview, fertilization can be described as the following steps:

  • Sperm Capacitation.
  • Sperm-Zona Pellucida Binding.
  • The Acrosome Reaction.
  • Penetration of the Zona Pellucida.
  • Sperm-Oocyte Binding.
  • Egg Activation and the Cortical Reaction.
  • The Zona Reaction.
  • Post-fertilization Events.

How does fertilization occur in humans?

Fertilization happens when a sperm cell successfully meets an egg cell in the fallopian tube. Once fertilization takes place, this newly fertilized cell is called a zygote. From here, the zygote will move down the fallopian tube and into the uterus. The zygote then burrows into the uterus lining.

What are the 4 steps to fertilization?

The stages of fertilization can be divided into four processes: 1) sperm preparation, 2) sperm-egg recognition and binding, 3) sperm-egg fusion and 4) fusion of sperm and egg pronuclei and activation of the zygote.

What is the process of fertilisation?

Fertilisation occurs when a sperm fuses with the female act during intercourse and further forms an egg that gets implanted in uterus of the female. The sperm travels through the fallopian tube and penetrates the zona pellucida layer of the ovum (female egg) and fuses with it which forms zygote (fertilized egg).

What is Embryology PDF?

Embryology. • Definition: the study of the origin and. development of an organism.

What are the 3 stages of fertilization?

Fertilization Process There are three stages to fertilization which ensure that the appropriate egg and sperm are able to find each other and to warrant that only one sperm enters the egg: chemotaxis, sperm activation/acrosomal reaction and sperm/egg adhesion.

Where does fertilization occur in human females?

fallopian tubes
Fertilization of an egg by a sperm normally occurs in the fallopian tubes. The fertilized egg then moves to the uterus, where it implants to the uterine lining.

What are the 3 phases of fertilization?

Human fertilization and development

  • Zygotic stage: The zygote is formed when the male gamete (sperm) and female gamete (egg) fuse.
  • Blastocyst stage: The single-celled zygote begins to divide into a solid ball of cells.
  • Embryonic stage: The major internal organs and external features begin to emerge, forming an embryo.

What is Fertilisation in human reproduction?

Fertilisation is the fusion of the nucleus of a male gamete with the nucleus of a female gamete, producing a new cell called a zygote .