Reproduction is an essential life process, …
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Meghna Thapar 5 years, 2 months ago
The menstrual cycle is the scientific term for the physiological changes that occur in fertile women for the purpose of sexual reproduction. The menstrual cycle is controlled by the endocrine system and commonly divided into three phases: the follicular phase, ovulation, and the luteal phase. Embryonic development takes through several developmental stages. The sperm and ovum fuse to form the zygote. The zygote undergoes mitotic cleavage to form morula which is a 16 celled stage known as the morula which further divides to form blastula which is 128 celled stage. Once the embryo reaches the blastocyst stage, approximately five to six days after fertilization, it hatches out of its zona pellucida and begins the process of implantation in the uterus.
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