What is Fossa temporalis?
The temporal fossa is a depression on the temporal region and one of the largest landmarks on the skull. The temporal bone, the sphenoid bone, the parietal bone and the frontal bone contribute to its concave wall. It is superior to the infratemporal fossa which lies beneath the zygomatic arch.
What structure is inferior wall of temporal fossa?
The infratemporal fossa contains the maxillary artery (originating from the external carotid artery). It also contains some of its branches, including the: middle meningeal artery. inferior alveolar artery.
What is temporal and infratemporal fossa?
Fossa temporalis. The infratemporal fossa is a space below the temporal fossa. A view of the skull without the soft tissues shows that these two anatomical structures communicate with one another. The fossa is irregularly shaped and is situated below and medial to the zygomatic arch. It is not fully enclosed by bone.
What lies in the infratemporal fossa?
The infratemporal fossa is the space between the skull base, lateral pharyngeal wall, and the ramus of mandible. The branches of the mandibular nerve and the attachments of the medial pterygoid lie deep to the lateral pterygoid while the maxillary artery lies superficial to it.
What is the weakest part of the skull?
pterion
The pterion is known as the weakest part of the skull. The anterior division of the middle meningeal artery runs underneath the pterion.
What is meant by fossa?
: an anatomical pit, groove, or depression the temporal fossa of the skull the fossa in the liver for the gallbladder.
What are temporal nerves?
Function. The deep temporal nerves provide motor innervation to the temporalis, which is a muscle of mastication that elevates and retracts the mandible. The deep temporal nerves also have articular branches which provide a minor contribution to the innervation of the temporomandibular joint.
What divides the temporal and infratemporal fossa?
Bony framework Bones that contribute significantly to the boundaries of the temporal and infratemporal fossae include the temporal, zygomatic, and sphenoid bones, and the maxilla and mandible. Parts of the frontal and parietal bones are also involved.
What nerve passes through the infratemporal fossa?
The mandibular nerve enters the infratemporal fossa and passes through the foramen ovale in the sphenoid bone, and divides at that point into a smaller anterior and a larger posterior trunk.
Which bone is most superior?
Anatomical terms of bone In anatomy, the atlas (C1) is the most superior (first) cervical vertebra of the spine and is located in the neck. It is named for Atlas of Greek mythology because, just as Atlas supported the globe, it supports the entire head.
Are teeth bones?
Even though teeth and bones seem very similar, they are actually different. Teeth are not bones. Yes, both are white in color and they do indeed store calcium, but that’s where their similarities end.
How big is a fossa?
21 lbsAdult
Fossa/Mass
