Sphenoid bone

sphenoidbasisphenoidpresphenoidbasisphenoid bonebasisphenoid bonesbasisphenoid pitsbasisphenoidal wingJugum sphenoidalelaterosphenoidotosphenoidal
The sphenoid bone is an unpaired bone of the neurocranium.wikipedia
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Body of sphenoid bone

body of the sphenoidbody of the sphenoid bonebody
The body of the sphenoid bone, more or less cubical in shape, is hollowed out in its interior to form two large cavities, the sphenoidal sinuses, which are separated from each other by a septum.

Pituitary gland

pituitaryhypophysishypophysis cerebri
The hypophysis rests upon the hypophysial fossa of the sphenoid bone in the center of the middle cranial fossa and is surrounded by a small bony cavity (sella turcica) covered by a dural fold (diaphragma sellae).

Basilar part of occipital bone

basioccipitalbasilar partbasilar part of the occipital bone
It is situated in the middle of the skull towards the front, in front of the basilar part of the occipital bone.
In the young skull this area is rough and uneven, and is joined to the body of the sphenoid by a plate of cartilage.

Sella turcica

suprasellarhypophyseal fossafossa hypophyseos
Until the seventh or eighth month of fetal development, the body of the sphenoid consists of two parts: one in front of the tuberculum sellæ, the presphenoid, with which the small wings are continuous; the other, consisting of the sella turcica and dorsum sellae, the postsphenoid, with which are associated the great wings, and pterygoid processes.
The sella turcica (Latin for Turkish seat) is a saddle-shaped depression in the body of the sphenoid bone of the human skull and of the skulls of other hominids including chimpanzees, orangutans and gorillas.

Bone

cortical bonebone tissuecancellous bone
The sphenoid bone is an unpaired bone of the neurocranium.

Skull

craniumcranialhuman skull
It is situated in the middle of the skull towards the front, in front of the basilar part of the occipital bone.
The base of the cranium is formed from a ring of bones surrounding the foramen magnum and a median bone lying further forward; these are homologous with the occipital bone and parts of the sphenoid in mammals.

Anterior clinoid process

anterioranterior clinoid processesclinoidal
In the sphenoid bone, the posterior border, smooth and rounded, is received into the lateral fissure of the brain; the medial end of this border forms the anterior clinoid process, which gives attachment to the tentorium cerebelli; it is sometimes joined to the middle clinoid process by a spicule of bone, and when this occurs the termination of the groove for the internal carotid artery is converted into a foramen (carotico-clinoid).

Posterior clinoid processes

posterior clinoid processposterior clinoid
In the sphenoid bone, the anterior boundary of the sella turcica is completed by two small eminences, one on either side, called the anterior clinoid processes, while the posterior boundary is formed by a square-shaped plate of bone, the dorsum sellæ, ending at its superior angles in two tubercles, the posterior clinoid processes, the size and form of which vary considerably in different individuals.

Orbit (anatomy)

orbitorbitseye socket
The sphenoid bone is one of the seven bones that articulate to form the orbit.
The superior orbital fissure lies just lateral and inferior to the optic canal, and is formed at the junction of the lesser and greater wing of the sphenoid bone.

Neurocranium

braincasebrain casecranial bones
The sphenoid bone is an unpaired bone of the neurocranium. The sphenoid articulates with the frontal, parietal, ethmoid, temporal, zygomatic, palatine, vomer, and occipital bones and helps to connect the neurocranium to the facial skeleton.

Vomer

vomerine teethvomer bonevomers
The sphenoid articulates with the frontal, parietal, ethmoid, temporal, zygomatic, palatine, vomer, and occipital bones and helps to connect the neurocranium to the facial skeleton.
It is located in the midsagittal line, and articulates with the sphenoid, the ethmoid, the left and right palatine bones, and the left and right maxillary bones.

Temporal bone

temporalPetrous ridgetemporals
The sphenoid articulates with the frontal, parietal, ethmoid, temporal, zygomatic, palatine, vomer, and occipital bones and helps to connect the neurocranium to the facial skeleton.
Fused with the squamous and mastoid parts and between the sphenoid and occipital bones lies the petrous part, which is shaped like a pyramid.

Dorsum sellae

dorsum sellæ
Until the seventh or eighth month of fetal development, the body of the sphenoid consists of two parts: one in front of the tuberculum sellæ, the presphenoid, with which the small wings are continuous; the other, consisting of the sella turcica and dorsum sellae, the postsphenoid, with which are associated the great wings, and pterygoid processes.
The dorsum sellae is part of the sphenoid bone in the skull.

Chiasmatic groove

Sulcus chiasmaticus
The superior surface of the body of the sphenoid bone is bounded behind by a ridge, which forms the anterior border of a narrow, transverse groove, the chiasmatic groove (optic groove, prechiasmatic sulcus), above and behind which lies the optic chiasma of cranial nerve 2 (the optic nerve).

Pterygoid hamulus

The pterygoid hamulus is a hook-like process at the lower extremity of the medial pterygoid plate of the sphenoid bone.

Pterygoid processes of the sphenoid

lateral pterygoid platemedial pterygoid platepterygoid
The pterygoid processes of the sphenoid (from Greek pteryx, pterygos, "wing"), one on either side, descend perpendicularly from the regions where the body and the greater wings of the sphenoid bone unite.

Cavernous sinus

cavernous sinusescavernouscavernous sinus syndrome
Carotid sulcus lodging cavernous sinus and internal carotid artery
The cavernous sinus within the human head, is one of the dural venous sinuses creating a cavity called the lateral sellar compartment bordered by the temporal bone of the skull and the sphenoid bone, lateral to the sella turcica.

Pterygoid fossa

The pterygoid fossa is an anatomical term for the fossa formed by the divergence of the lateral pterygoid plate and the medial pterygoid plate of the sphenoid bone.

Frontal bone

frontalfrontalsfrontal bones
The sphenoid articulates with the frontal, parietal, ethmoid, temporal, zygomatic, palatine, vomer, and occipital bones and helps to connect the neurocranium to the facial skeleton.
The border of the squamous part is thick, strongly serrated, bevelled at the expense of the inner table above, where it rests upon the parietal bones, and at the expense of the outer table on either side, where it receives the lateral pressure of those bones; this border is continued below into a triangular, rough surface, which articulates with the great wing of the sphenoid.

Clivus (anatomy)

clivus
It forms a gradual sloping process at the anterior most portion of the basilar occipital bone at its junction with the sphenoid bone.

Middle cranial fossa

middle fossamiddlecranial fossa, middle
It is bounded in front by the posterior margins of the lesser wings of the sphenoid bone, the anterior clinoid processes, and the ridge forming the anterior margin of the chiasmatic groove; behind, by the superior angles of the petrous portions of the temporal bones and the dorsum sellæ; laterally by the temporal squamæ, sphenoidal angles of the parietals, and greater wings of the sphenoid.

Palatine bone

palatinepalatinespalate
The sphenoid articulates with the frontal, parietal, ethmoid, temporal, zygomatic, palatine, vomer, and occipital bones and helps to connect the neurocranium to the facial skeleton.
The human palatine articulates with six bones: the sphenoid, ethmoid, maxilla, inferior nasal concha, vomer and opposite palatine.

Foramen rotundum

One makes its appearance in each wing between the foramen rotundum and foramen ovale about the eighth week.
The foramen rotundum is a circular hole in the sphenoid bone that connects the middle cranial fossa and the pterygopalatine fossa.

Foramen spinosum

The foramen spinosum is one of two foramina located in the base of the human skull, on the sphenoid bone.

Carotid groove

Carotid sulcus
Carotid sulcus lodging cavernous sinus and internal carotid artery
The carotid groove is a anatomical groove in the sphenoid bone located above the attachment of each great wing of the sphenoid bone.