medical_animation on Instagram: "Fertilization and Implantation This section of the fallopian tube is where the sperm fuses with the egg. Once fertilized, the egg begins a rapid journey toward the uterus. The stages of fertilization can be divided into four key processes: 1. Sperm preparation 2. Recognition and binding between sperm and egg 3. Fusion of the sperm with the egg 4. Fusion of their pronuclei and activation of the zygote Source: Animation by @design_cells #developmentbiology #embryol