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Fontanelle. A fontanelle (or fontanel) (colloquially, soft spot) is an anatomical feature of the infant human skull comprising soft membranous gaps (sutures) between the cranial bones that make up the calvaria of a fetus or an infant. [1] Fontanelles allow for stretching and deformation of the neurocranium both during birth and later as the ...
Frontal suture. The frontal suture is a fibrous joint that divides the two halves of the frontal bone of the skull in infants and children. Typically, it completely fuses between three and nine months of age, with the two halves of the frontal bone being fused together. It is also called the metopic suture, [1][2] although this term may also ...
Fetal head. The fetal head, from an obstetrical viewpoint, and in particular its size, is important because an essential feature of labor is the adaptation between the fetal head and the maternal bony pelvis. Only a comparatively small part of the head at term is represented by the face. The rest of the head is composed of the firm skull, which ...
Craniosynostosis is a condition in which one or more of the fibrous sutures in a young infant's skull prematurely fuses by turning into bone (ossification), [2] thereby changing the growth pattern of the skull. [3] Because the skull cannot expand perpendicular to the fused suture, it compensates by growing more in the direction parallel to the ...
In forensic anthropology, the sagittal suture is one method used to date human remains. The suture begins to close at age twenty nine, starting at where it intersects at the lambdoid suture and working forward. By age thirty five, the suture is completely closed. This means that when inspecting a human skull, if the suture is still open, one ...
Cranial sutures. A defining characteristic of Crouzon syndrome is craniosynostosis, which results in an abnormal head shape.This is present in combinations of: frontal bossing, trigonocephaly (fusion of the metopic suture), brachycephaly (fusion of the coronal suture), dolichocephaly (fusion of the sagittal suture), plagiocephaly (unilateral premature closure of lambdoid and coronal sutures ...
The coronal suture is a dense, ... Coronal suture of new born baby. External links ... "Anatomy diagram: 34256.000-2".
The parietal bones (/ pəˈraɪ.ɪtəl / pə-RY-it-əl) are two bones in the skull which, when joined at a fibrous joint known as a cranial suture, form the sides and roof of the neurocranium. In humans, each bone is roughly quadrilateral in form, and has two surfaces, four borders, and four angles. It is named from the Latin paries (-ietis), wall.