EMBRYOLOGY
FERTILISATION EARLY DEVELOPMENT OF EMBRYO AND IMPLANTATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Fusion of Sperm and Egg Membranes
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Cortical Reaction
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Acrosomal Reaction
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Organogenesis
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Detailed explanation-1: -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.
Detailed explanation-2: -Gastrulation is characterized by cell movement and reorganization within the embryo (morphogenetic movements) to the interior of the embryo, forming three primary germ layers: ectoderm, mesoderm, and endoderm.
Detailed explanation-3: -Fertilization is defined as the union of two gametes. During fertilization, sperm and egg fuse to form a diploid zygote to initiate prenatal development. In mammals, fertilization involves multiple ordered steps, including the acrosome reaction, zona pellucida penetration, sperm–egg attachment, and membrane fusion.
Detailed explanation-4: -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. 01-Apr-2000