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Embryonic development in the human, covers the first eight weeks of development; at the beginning of the ninth week the embryo is termed a fetus. The eight weeks have 23 stages. Human embryology is the study of this development during the first eight weeks after fertilization. The normal period of gestation (pregnancy) is about nine months or ...
Amniotic sac. The amniotic sac, also called the bag of waters[ 1][ 2] or the membranes, [ 3] is the sac in which the embryo and later fetus develops in amniotes. It is a thin but tough transparent pair of membranes that hold a developing embryo (and later fetus) until shortly before birth. The inner of these membranes, the amnion, encloses the ...
A Child Is Born. A Child Is Born (full title: A Child Is Born: The drama of life before birth in unprecedented photographs. A practical guide for the expectant mother; original Swedish title: Ett barn blir till) is a 1965 photographic book by Swedish photojournalist Lennart Nilsson. The book consists of photographs charting the development of ...
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).
One baby's lost bottle is a clever primate's treasure. ... the orangutan is seen slapping the pool of water where the bottle had landed on the opposite side, before leaving and returning with a ...
The fetal circulatory system includes three shunts to divert blood from undeveloped and partially functioning organs, as well as blood supply to and from the placenta. In humans, the circulatory system is different before and after birth. The fetal circulation is composed of the placenta, umbilical blood vessels encapsulated by the umbilical ...
Adults are advised to consume at least 1500 mg of sodium daily (especially if you have cardiovascular disease), with 2300 mg as a daily limit. “One teaspoon of table salt has about 2300 mg of ...
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 abdominal pregnancy, [1] is too large to be reabsorbed by the body, and calcifies on the outside as ...