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8. Pregnancy

Around the tenth day, the blastocyst implants in the endometrium, the mucous membrane that makes up the uterine wall. The mucous cells of the blastocyst combine with the uterine lining to create the placenta. Once the implantation reaches the final steps, the blastocyst becomes an embryo, usually around five weeks after implantation. During this time, the brain and spinal cord, the digestive system, and the limbs develop. The uterus stretches to accommodate the baby’s growth and provides nourishment. After approximately 9 months, the baby is born, exiting through the birth canal.

pregnancy female reproductive system

vgajic / Getty Images

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Disclaimer

This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.