Fetus, Effects of Drugs on The
The pregnant drug-dependent woman subjects her developing infant to a host of problems. When assessing the effects of drugs, especially illicit drugs, on newborn infants...
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Face, Nose, and Palate Embryological Development
In humans, the development of the face and its features such as the nose and palate occurs in the embryonic stage of fetal development. The molecular e...
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Fetal Circulation
Throughout intrauterine life, maternal blood supplies the fetus with oxygen and nutrients, and carries away its wastes. The anatomical structures that allow for such an exchange are ...
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Gastrointestinal Embryological Development
The primitive gut tube forms during week four of gestation. It derives from the incorporation of the dorsal part of the definitive yolk sac into the embryo d...
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Heart, Embryonic Development and Changes at Birth
The developing fetal heart accounts for a large percentage of the volume of the early thorax. About 20 days after fertilization, the heart develops fr...
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Human Development (Timetables and Developmental Horizons)
The Carnegie staging system is a method of staging embryonic development that evaluates the embryo's growth and differentiation in 23 stages. ...
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Limb Buds and Limb Embryological Development
In human development, each limb results from a developmental field. The developmental fields are determined during gastrulation. These limb fields are esta...
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Nervous System, Embryological Development
The neural system develops from ectodermal cells, the outermost layer of embryonic germ cells. The covering of the neural system and the blood vessels that su...
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Fetal Research
Fetal research encompasses a broad array of research activities and potential clinical applications. It is ethically controversial because, although it may yield beneficial results, it ...
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Fetus
The unborn child from the start of the ninth week after conception to the time of birth.
Prenatal development is defined by two stages. The first stage involves the formation of the embryo from ...
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Fetus, Effects of Drugs on The
Face, Nose, and Palate Embryological Development
Fetal Research
Fetus