The coronal suture is a dense, fibrous
connective tissue
Connective tissue is one of the four primary types of animal tissue, along with epithelial tissue, muscle tissue, and nervous tissue. It develops from the mesenchyme derived from the mesoderm the middle embryonic germ layer. 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 bones from the
frontal bone of the
skull
The skull is a bone protective cavity for the brain. The skull is composed of four types of bone i.e., cranial bones, facial bones, ear ossicles and hyoid bone. However two parts are more prominent: the cranium and the mandible. In humans, t ...
.
Structure
The coronal suture lies between the paired
parietal bones and the
frontal bone of the
skull
The skull is a bone protective cavity for the brain. The skull is composed of four types of bone i.e., cranial bones, facial bones, ear ossicles and hyoid bone. However two parts are more prominent: the cranium and the mandible. In humans, t ...
.
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 may occur.
This can result in skull deformities.
There are two possible deformities that can be caused by the premature closure of the coronal suture:
* a high, tower-like skull called "
oxycephaly
Turricephaly is a type of cephalic disorder where the head appears tall with a small length and width. It is due to premature closure of the coronal suture plus any other suture, like the lambdoid, or it may be used to describe the premature fus ...
" or "turret skull".
* a twisted and asymmetrical skull called "
plagiocephaly".
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 bones.
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
*
*
{{Authority control
Cranial sutures
Human head and neck
Joints
Joints of the head and neck
Skeletal system
Skull