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The fetus is considered full-term between weeks 37 and 40 when it is sufficiently developed for life outside the uterus. [14] [15] It may be 48 to 53 cm (19 to 21 in) in length when born. Control of movement is limited at birth, and purposeful voluntary movements continue to develop until puberty.
The zygote then undergoes a defined development process that is known as human embryogenesis, and this starts the typical 9-month gestation period that is followed by childbirth. The fertilization of the ovum may be achieved by artificial insemination methods, which do not involve sexual intercourse. [3] Assisted reproductive technology also ...
The normal period of gestation (pregnancy) is about nine months or 40 weeks. The germinal stage refers to the time from fertilization through the development of the early embryo until implantation is completed in the uterus. The germinal stage takes around 10 days. [1] During this stage, the zygote begins to divide, in a process called cleavage.
The uterus or womb is the major female reproductive organ. The uterus provides mechanical protection, nutritional support, and waste removal for the developing embryo (weeks 1 to 8) and fetus (from week 9 until the delivery). In addition, contractions in the muscular wall of the uterus are important in pushing out the fetus at the time of birth.
A lithopedion. This highly unusual specimen remained in the abdomen of a woman for 2 years. A lithopedion ( also spelled lithopaedion or lithopædion; from Ancient Greek: λίθος "stone" and Ancient Greek: παιδίον "small child, infant"), or stone baby, is a rare phenomenon which occurs most commonly when a fetus dies during an ...
3-032, 3-05d. [ edit on Wikidata] Obstetric ultrasonography, or prenatal ultrasound, is the use of medical ultrasonography in pregnancy, in which sound waves are used to create real-time visual images of the developing embryo or fetus in the uterus (womb). The procedure is a standard part of prenatal care in many countries, as it can provide a ...
According to Dr. Nicole Alicia Sparks, a board-certified OB/GYN, two hormones that increase during pregnancy are responsible for swollen body parts, including the nose. “There are so many ...
Fetal resorption. Fetal resorption (also known as fetus resorption) is the disintegration and assimilation of one or more fetuses in the uterus at any stage after the completion of organogenesis, which, in humans, is after the ninth week of gestation. Before organogenesis, the process is called embryo resorption. [1]