The temporal fossa is bounded by a few anatomical landmarks, anteriorly the frontal process of the zygomatic bone,
superiorly and posteriorly the temporal lines
, and inferiorly the zygomatic arch.
In what part of the temporal fossa is it located?
| Temporal fossa | TA2 426 | FMA 75307 | Anatomical terminology |
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Which areas of the human skull comprise the boundaries of the temporal fossa?
- Superiorly and posteriorly – superior temporal line.
- Inferiorly – zygomatic arch.
- Anteriorly – frontal process of the zygoma and zygomatic process of the frontal bone.
What is the temporal fossa?
The temporal fossa is
the area on the side of the cranium from which the temporal muscle arises
. … The bony part of the temporal fossa is formed anteriorly by the zygomatic bone, somewhat more posteriorly by the greater wing of the sphenoid, and still farther posteriorly by the temporal squama.
Where are the temporal lines located?
The superior temporal line is an arching ridge
along the lateral surface of the skull
; it begins as a continuation of the upper posterior border of the zygomatic bone and continues as a broad arch along the frontal and parietal bones, above and roughly parallel to the upper edge of the temporal bone.
What are the boundaries of the temporal and infratemporal fossa?
Both superiorly and posteriorly the temporal fossa is bordered by
the superior temporal line
(origin of the deep temporal fascia). The inferior border runs along the zygomatic arch. Lastly, the anterior border is marked by the frontal process of the zygoma and the zygomatic process of the frontal bone.
What is found in the infratemporal fossa?
The infratemporal fossa serves as the passageway for many neurovascular structures. In addition to this, it contains superficial muscles like the inferior portion of the temporalis muscle,
the lateral pterygoid muscle and the medial pterygoid muscle
.
Where is the Pterygopalatine fossa?
The pterygopalatine fossa (PPF) is a small, clinically inaccessible, fat-filled space located
in the deep face
that serves as a major neurovascular crossroad between the oral cavity, nasal cavity, nasopharynx, orbit, masticator space, and the middle cranial fossa.
What goes through the Pterygopalatine fossa?
The inferior orbital fissure forms the superior boundary of the pterygopalatine fossa and communicates with the orbit. It is a space between the sphenoid and maxilla bones.
The zygomatic branch of the maxillary nerve and the infraorbital artery and vein
pass through the inferior orbital fissure.
What is the function of the temporal lines?
| Origin Temporal fossa (up to inferior temporal line), Temporal fascia | Insertion Apex and medial surface of coronoid process of mandible | Action Anterior fibres: Elevates mandible Posterior part: Retracts mandible | Innervation Deep temporal branches (of mandibular nerve (CN V3)) |
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What is a fossa in anatomy?
Fossa –
A shallow depression in the bone surface
. Here it may receive another articulating bone or act to support brain structures. Examples include trochlear fossa, posterior, middle, and anterior cranial fossa.
What muscle attaches to the temporal fossa?
| Temporalis muscle | The temporalis muscle; the zygomatic arch and masseter have been removed. | Details | Origin temporal lines on the parietal bone of the skull and the superior temporal surface of the sphenoid bone | Insertion coronoid process of the mandible and retromolar fossa |
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What type of bone is temporal?
This a pair of flat bones located on either side of your head, behind the frontal bone. Temporal bones. This is a
pair of irregular bones
located under each of the parietal bones.
What is the large bony projection on the temporal bone just posterior to the ear canal?
There are two items of note on the mastoid. The first is
the mastoid process
, an inferior projection of bone, palpable just behind the ear. It is a site of attachment for many muscles, such as the sternocleidomastoid. Also of clinical importance are the mastoid air cells.
What is the largest and strongest bone of the face?
Your mandible, or jawbone
, is the largest, strongest bone in your face. It holds your lower teeth in place and you move it to chew your food. Apart from you mandible and your vomer, all your facial bones are arranged in pairs.
What structures does infratemporal fossa communicate with?
- Maxillary artery – the terminal branch of the external carotid artery. It travels through the infratemporal fossa. …
- Pterygoid venous plexus – drains the eye and is directly connected to the cavernous sinus. …
- Maxillary vein.
- Middle meningeal vein.
