What 4 bones meet at the pterion?
What 4 bones meet at the pterion?
The pterion is a craniometric point near the sphenoid fontanelle of the skull. It is a point of convergence of the sutures between the frontal, sphenoid, parietal, and squamous temporal bones [1].
Which bones converge at the pterion?
There are four bones of the skull that come together to form the pterion: the frontal bone, the parietal bone, the greater wing of the sphenoid bone and the squamous part of the temporal bone.
What are the 4 prominent sutures of the skull?
The major sutures of the skull include the following:
- Metopic suture. This extends from the top of the head down the middle of the forehead, toward the nose.
- Coronal suture. This extends from ear to ear.
- Sagittal suture.
- Lambdoid suture.
What is the pterion made of?
Pterion is the name given to the region on the lateral aspect of the skull where four bones are joined: Parietal bone. Squamous part of temporal bone. Front bone.
Where is the pterion bone?
The pterion is an H-shaped bony neurological landmark found at the junction of the frontal, sphenoid, parietal and the squamous part of temporal bone (1). It is located approximately 4 cm superior to the zygomatic arch and 3.5 cm posterior to the frontozygomatic suture (2).
Which of the following bones fuse together to help form the pterion?
At the intersection of four bones is the pterion, a small, capital-H-shaped suture line region that unites the frontal bone, parietal bone, squamous portion of the temporal bone, and greater wing of the sphenoid bone. It is the weakest part of the skull.
Which of these bones does not contribute to the region known as the pterion?
24 Cards in this Set
| The skull consists of _____ cranial bones and _____ facial bones. | 8,14 |
|---|---|
| which of these bones does not contribute to the region known as the pterion | Occipital |
| which bones form the calvaria | occipital, parietal, and frontal |
| of the four largest types of sutures in the skull, which are paired | squamous only |
Which frontal bone articulates at the pterion?
The pterion is the H-shaped formation of sutures on the side of the calvarium representing the junction of four skull bones: the greater wing of the sphenoid bone. squamous portion of the temporal bone. frontal bone.
What is deep to pterion?
The pterion is known as ‘the danger area’ on the skull for head injuries. This is because the bone is thin at this site and is grooved by vessels on its internal surface (or may even lie in a bony tunnel here). It is the anterior branch of the middle meningeal artery (and vein) that lies deep to the pterion.
