![]() ![]() This article will review the anatomical location and structures that border the fontanelles and their average closure time. Certain conditions such as dehydration or infection can alter the appearance of the fontanelles, causing them to sink or bulge, respectively. Fontanelle morphology may vary between infants, but characteristically they are flat and firm. Six fontanelles are present during infancy, with the most notable being the anterior and posterior fontanelles. These gaps are composed of membranous connective tissue and are known as fontanelles.įontanelles, often referred to as "soft spots," are one of the most prominent anatomical features of the newborn's skull. ![]() However, the bones that shape the cranium begin unfused, leaving several gaps between the individual bones of the infant's skull. They also allow for rapid postnatal growth and development of the brain. The sutures function as seams, and they are highly necessary to facilitate the movement and molding of the cranium through the birth canal during labor. ![]() At birth, the newborn's skull consists of five major bones (two frontal, two parietal, and one occipital) that are separated by connective tissue junctions known as cranial sutures. ![]()
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