Frontal suture
Encyclopedia
The frontal suture is a dense connective tissue
structure that divides the two halves of the frontal bone
of the skull
in infants and children. It usually disappears by the age of six, with the two halves of the frontal bone being fused together. If the suture is not present at birth because both frontal bones have fused (craniosynostosis), it will cause a keel-shaped deformity of the skull called "trigonocephaly
."
It is present in a fetal skull so that the skull can bend and is very elastic at the time of birth. The baby's head bends when coming out of the mother's womb. The space is filled as the child grows older.
to bregma
or persist as a partial metopic suture(see image of frontal bone) (where part of the suture survives and is connected to either bregma or nasion) or as an isolated metopic fissure. Metopic sutures are of no clinical significance, although they can be mistaken for cranial fractures. As metopic sutures are visible in radiographs they can be useful for the forensic identification of human skeletal remains; metopic sutures should not be confused with supranasal sutures (a small zig-zag shaped suture located at and/or immediately superior to the glabella
).
Connective tissue
"Connective tissue" is a fibrous tissue. It is one of the four traditional classes of tissues . Connective Tissue is found throughout the body.In fact the whole framework of the skeleton and the different specialized connective tissues from the crown of the head to the toes determine the form of...
structure that divides the two halves of the frontal bone
Frontal bone
The frontal bone is a bone in the human skull that resembles a cockleshell in form, and consists of two portions:* a vertical portion, the squama frontalis, corresponding with the region of the forehead....
of the skull
Human skull
The human skull is a bony structure, skeleton, that is in the human head and which supports the structures of the face and forms a cavity for the brain.In humans, the adult skull is normally made up of 22 bones...
in infants and children. It usually disappears by the age of six, with the two halves of the frontal bone being fused together. If the suture is not present at birth because both frontal bones have fused (craniosynostosis), it will cause a keel-shaped deformity of the skull called "trigonocephaly
Trigonocephaly
Trigonocephaly is a congenital condition of premature fusion of the metopic suture leading to a triangular shaped forehead. The merging of the two frontal bones leads to transverse growth restriction and parallel growth expansion...
."
It is present in a fetal skull so that the skull can bend and is very elastic at the time of birth. The baby's head bends when coming out of the mother's womb. The space is filled as the child grows older.
Persistent Metopic Suture
In some individuals the suture can persist (totally or partly) into adulthood, it is referred to as a metopic suture (or a persistent metopic suture). The suture can either bisect the frontal bone and run from nasionNasion
The nasion is the intersection of the frontal and two nasal bones of the human skull. Its manifestation on the visible surface of the face is a distinctly depressed area directly between the eyes, just superior to the bridge of the nose....
to bregma
Bregma
The bregma is the anatomical point on the skull at which the coronal suture is intersected perpendicularly by the sagittal suture.-Location:The bregma is located at the intersection of the coronal suture and the sagittal suture on the superior middle portion of the calvarium...
or persist as a partial metopic suture(see image of frontal bone) (where part of the suture survives and is connected to either bregma or nasion) or as an isolated metopic fissure. Metopic sutures are of no clinical significance, although they can be mistaken for cranial fractures. As metopic sutures are visible in radiographs they can be useful for the forensic identification of human skeletal remains; metopic sutures should not be confused with supranasal sutures (a small zig-zag shaped suture located at and/or immediately superior to the glabella
Glabella
The glabella, in humans, is the space between the eyebrows and above the nose. It is slightly elevated, and joins the two superciliary ridges.-Etymology:The term is derived from the Latin glabellus, meaning smooth, as this area is usually hairless....
).