![]() At birth, many regions of the newborn's skull have not yet been converted to bone, leaving "soft spots" known as fontanels. Normal head circumference for a full-term infant is 33–36 cm at birth. While the adult human skull is about one seventh of the total body length, the newborn's is about 1⁄ 4. HeadĪ newborn's head is very large in proportion to the body, and the cranium is enormous relative to his or her face. ![]() After the first week, healthy term neonates should gain 10–20 grams/day. Over the first 5–7 days following birth, the body weight of a term neonate decreases by 3–7%, and is largely a result of the resorption and urination of the fluid that initially fills the lungs, in addition to a delay of often a few days before breastfeeding becomes effective. In developed countries, the average birth weight of a full-term newborn is approximately 3.4 kg ( 7 + 1⁄ 2 lb), and is typically in the range of 2.7–4.6 kg (6.0–10.1 lb). The way to measure a baby's length is to lay the baby down and stretch a measuring tape from the top of the head to the bottom of the heel. In developed countries, the average total body length of a newborn is 35.6–50.8 cm (14.0–20.0 in), although premature newborns may be much smaller. JSTOR ( March 2022) ( Learn how and when to remove this template message)Ī newborn's shoulders and hips are wide, the abdomen protrudes slightly, and the arms and legs are relatively long with respect to the rest of their body. ![]() Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This section needs additional citations for verification. ![]()
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