The coronal suture is a dense, fibrous
connective tissue joint
A joint or articulation (or articular surface) is the connection made between bones, ossicles, or other hard structures in the body which link an animal's skeletal system into a functional whole.Saladin, Ken. Anatomy & Physiology. 7th ed. McGraw- ...
that separates the two
parietal bone
The parietal bones ( ) 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 bord ...
s from the
frontal bone of the
skull.
Structure
The coronal suture lies between the paired
parietal bone
The parietal bones ( ) 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 bord ...
s and the
frontal bone of the
skull.
It runs from the
pterion on each side.
Nerve supply
The coronal suture is likely supplied by a branch of the
trigeminal nerve
In neuroanatomy, the trigeminal nerve (literal translation, lit. ''triplet'' nerve), also known as the fifth cranial nerve, cranial nerve V, or simply CN V, is a cranial nerve responsible for Sense, sensation in the face and motor functions ...
.
Development
The coronal suture is derived from the
paraxial mesoderm.
Clinical significance
If certain bones of the skull grow too fast then premature fusion of the sutures,
craniosynostosis, may occur.
This can result in skull deformities.
These deformities include:
*
Brachycephaly (both sides)
*
Plagiocephaly (one side only)
*
Oxycephaly (both sides)
References
* "Sagittal suture." ''Stedman's Medical Dictionary, 27th ed.'' (2000).
* Moore, Keith L., and T.V.N. Persaud. ''The Developing Human: Clinically Oriented Embryology, 7th ed.'' (2003).
Additional images
File:Coronal suture - animation04.gif, Animation. Coronal suture shown in red.
File:Coronal suture - animation08.gif, Frontal bone and parietal bone
The parietal bones ( ) 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 bord ...
s.
File:Gray188-Coronal suture.png , Side view of the skull. ('Coronal suture' indicated by the arrow.)
File:Coronal suture 2.jpg, Superior view of anterior part of the skull. Coronal suture runs horizontally.
File:Sobo 1909 47 - Coronal suture.png, Coronal suture seen from inside.
File:Gray198.png, The skull at birth, showing the lateral fontanelle.
File:Coronal suture.jpg, Coronal suture of new born baby.
External links
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{{Authority control
Cranial sutures
Human head and neck
Joints
Joints of the head and neck
Skeletal system
Skull