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Microcephaly (from Neo-Latin microcephalia, from Ancient Greek μικρός mikrós "small" and κεφαλή kephalé "head" [2]) is a medical condition involving a smaller-than-normal head. [3] Microcephaly may be present at birth or it may develop in the first few years of life. [3]
The human head becomes proportionately smaller and the legs become proportionately longer as humans mature. This implies that proportionately large heads and proportionately short legs would be neotenous features for adults. Neoteny is the retention of juvenile traits well into adulthood.
Brachycephaly (derived from the Ancient Greek βραχύς, 'short' and κεφαλή, 'head') is the shape of a skull shorter than average in its species.It is perceived as a cosmetically desirable trait in some domesticated dog and cat breeds, notably the pug and Persian, and can be normal or abnormal in other animal species.
Finally, in adults, the head represents approximately 12% of the body length. The cephalocaudal trend is also the trend of infants learning to use their upper limbs before their lower limbs . The proximodistal trend, on the other hand, is the prenatal growth from 5 months to birth when the fetus grows from the inside of the body outwards.
Alcohol metabolizes slowly in the fetus and remains for a long time when compared to an adult. [62] [37] A human fetus appears to be at triple risk from maternal alcohol consumption: [63] [64] The placenta allows free entry of ethanol and toxic metabolites like acetaldehyde into the fetal compartment. The so-called placental barrier is ...
Paris Hilton explained why she didn’t hesitate to defend her son Phoenix after internet trolls criticized the size of his head. “Usually, I wouldn’t even dignify anything like that with a ...
reduced head length and width for age Turricephaly is a type of cephalic disorder where the head appears tall with a small length and width. [ 3 ] [ 4 ] It is due to premature closure of the coronal suture plus any other suture , like the lambdoid , [ 5 ] or it may be used to describe the premature fusion of all sutures. [ 2 ]
Macrocephaly is a condition in which circumference of the human head is abnormally large. [1] It may be pathological or harmless, and can be a familial genetic characteristic. . People diagnosed with macrocephaly will receive further medical tests to determine whether the syndrome is accompanied by particular disorde