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In anatomy, a fossa (/ ... usually in a bone, such as the hypophyseal fossa (the depression in the sphenoid bone). [3] Some examples include: ...
Bone Cranial fossa Foramina Number Vessels Nerves frontal-supraorbital foramen: 2: supraorbital artery supraorbital vein: supraorbital nerve: frontal: anterior cranial fossa: foramen cecum: 1: emissary veins to superior sagittal sinus from the upper part of the nose [3] ethmoid: anterior cranial fossa (osama) foramina of cribriform plate ~20 ...
A fossa (from the Latin "fossa", ditch or trench) is a depression or hollow, usually in a bone, such as the hypophyseal fossa, the depression in the sphenoid bone. [15] A meatus is a short canal that opens to another part of the body. [16] An example is the external auditory meatus. A fovea (Latin: pit) is a small pit, usually on the head of a ...
The middle cranial fossa is formed by the sphenoid bones, and the temporal bones. It lodges the temporal lobes, and the pituitary gland. [1] [2] It is deeper than the anterior cranial fossa, is narrow medially and widens laterally to the sides of the skull. It is separated from the posterior cranial fossa by the clivus and the petrous crest.
The iliac fossa is bounded above by the iliac crest, and below by the arcuate line. It is bordered in front and behind by the anterior and posterior borders of the ilium. The iliac fossa gives origin to the iliacus muscle. [1] The obturator nerve passes around the iliac fossa. [2] It is perforated at its inner part by a nutrient canal.
Anteriorly, the posterior cranial fossa is bounded by the dorsum sellae, posterior aspect of the body of sphenoid bone, and the basilar part of occipital bone/clivus. [2] Laterally, it is bounded by the petrous parts and mastoid parts of the temporal bones, and the lateral parts of occipital bone. [2]
Stafne bone cavity; Episternal ossicles; Fossa navicularis magna; Transverse basilar fissure - or Saucer's fissure; Canalis basilaris medianus; Craniopharyngeal canal; Intermediate condylar canal; Foramen arcuale; Os odontoideum; Os acromiale; Ossiculum terminale (of dens) Scapular foramina and tunnels
In the temporal bone, the mandibular fossa is bounded anteriorly by the articular tubercle and posteriorly by the tympanic portion of the temporal bone, which separates it from the external acoustic meatus. The fossa is divided into two parts by a narrow slit, the petrotympanic fissure (Glaserian fissure).