Base of skull.

Description. It serves as the origin for the sphenomandibular ligament. spine of sphenoid bone [TA] a posterior and downward projection from the greater wing of the sphenoid bone on either side, located posterolateral to the foramen spinosum, so named for its proximity to this spine; gives attachment to the sphenomandibular ligament. spine: see spinal columnspinal column, bony column forming the main structural support of the skeleton of humans and other vertebrates, also known as the vertebral column or backbone. Synonym (s): … The book is widely regarded as an extremely influential work on the subject, and has continued to be revised and republished from its initial publication in 1858 to the present day. Gray's Anatomy is an English language textbook of human anatomy originally written by Henry Gray and illustrated by Henry Vandyke Carter. 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. The latest edition of the book, the 41st, was published in September 2015. spine of sphenoid - Google Search. If you had any spine, you wouldn't let her walk all over you like that. The superior surface features: foramen rotundum: transmits the maxillary branch of the trigeminal nerve; On axial planes, it sits just posterior to the sphenoid sinuses. ), at Human Anatomy Online, SUNY Downstate Medical Center. It forms a gradual sloping process at the anterior most portion of the basilar occipital bone at its junction with the sphenoid bone. Spine of sphenoid bone marked with black circle The base of skull , also known as the cranial base or the cranial floor , is the most inferior area of the skull. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. The foramen ovale is situated in the posterior part of the sphenoid bone, posterolateral to the foramen rotundum. The spina angularis fits into the angle between the squama and the petrous portion of the temporal and presents at … The sphenoid bone is an unpaired bone of the neurocranium. It serves as the origin for the sphenomandibular ligament.

(Spine of sphenoid labeled at center top. 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. Breathnach [3] states that a projection, more or less prominent on the posterior edge of the lateral pterygoid plate, a little way down, may mark the anterior attachment of a "pterygospinous" ligament extending to the base of the, [10] reported that a complete osseous bar, arch, or lamina connecting the posterior border of lateral lamina of pterygoid process and, These were evaluated in the area between the following limits, which were marked on MPRs prior to the evaluation of the series of slices: the sagittal line through the medial pterygoid plate, the transverse line through the posterior border of the jugular foramen; the oblique line drawn from the posterior border of the medial pterygoid plate obliquely through the, Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content, Pterygospinous bar and foramen in the adult human skulls of North India: its incidence and clinical relevance, The pneumatization patterns of the roof of the parapharyngeal space in CBCT.

A posterior and downward projection from the greater wing of the sphenoid bone on either side, located posterolateral to the foramen spinosum, so named for its proximity to this spine; gives attachment to the sphenomandibular ligament. It is situated in the middle of the skull towards the front, in front of the temporal bone and the basilar part of the occipital bone. This article incorporates text in the public domain from page 150 of the 20th edition of Gray's Anatomy (1918) External links.

The spinal column of a vertebrate. Spine of sphenoid bone marked with black circle, This article incorporates text in the public domain from page 150 of the 20th edition of Gray's Anatomy (1918), Articulation of the mandible. Spine of sphenoid bone: | The |great wings|, or ali-sphenoids, are two strong processes of bone, which arise from t... World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive collection ever assembled. It is slack when the temporomandibular joint (TMJ) is in closed position. The great wings, or alae-sphenoids, are two strong processes of bone, which arise from the sides of the body, and are curved upward, lateralward, and backward; the posterior part of each projects as a triangular process which fits into the angle between the squama and the petrous portion of the temporal bone and presents at its apex a downwardly directed process, the spina angularis (sphenoidal spine). The great wings, or alae-sphenoids, are two strong processes of bone, which arise from the sides of the body, and are curved upward, lateralward, and backward; the posterior part of each projects as a triangular process which fits into the angle between the squama and the petrous portion of the temporal bone and presents at its apex a downwardly directed process, the spina angularis (sphenoidal spine). The great wings, or alae-sphenoids, are two strong processes of bone, which arise from the sides of the body, and are curved upward, lateralward, and backward; the posterior part of each projects as a triangular process which fits into the angle between the squama and the petrous portion of the temporal bone and presents at its apex a downwardly directed process, the spina angularis (sphenoidal spine). The superior surface of the body of the sphenoid bone presents in front a prominent spine, the ethmoidal spine, for articulation with the cribriform plate of the ethmoid; behind this is a smooth surface slightly raised in the middle line, and grooved on either side for the olfactory lobes of the brain. Medial aspect.

Inferior surface. Inferior surface. 2. Carry a pair of thick gloves to protect you from hedgehog spines. a posterior and downward projection from the greater wing of the sphenoid bone on either side, located posterolateral to the foramen spinosum, so named for its proximity to this spine; gives attachment to the sphenomandibular ligament. The sphenoid bone is an unpaired pneumatic unpredictable bone, arranged at the base of the skull, and wedged between the frontal and ethmoid bones in front, basi-occiput and petrous piece of transient bones behind, and squamous part of the worldly bone on each side. The dorsum sellae is part of the sphenoid bone in the skull. Anatomy figure: 27:02-04 at Human Anatomy Online, SUNY Downstate Medical Center - "Schematic view of key landmarks of the infratemporal fossa." The middle meningeal artery, middle meningeal vein, and the meningeal branch of the mandibular nerve pass through the foramen. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. The plate covers in the middle and posterior ethmoidal cells and forms a large part of the medial wall of the orbit. The vomer forms the inferior part of the nasal septum, with the superior part formed by the perpendicular plate of the ethmoid bone. These are the vertically oriented squamous part, and the horizontally oriented orbital part, making up the bony part of the forehead, part of the bony orbital cavity holding the eye, and part of the bony part of the nose respectively. The base of skull, also known as the cranial base or the cranial floor, is the most inferior area of the skull. It is located on the side of the skull, just behind the temple. The pterion is the region where the frontal, parietal, temporal, and sphenoid bones join together. ..... Click the link for more information. Spine(s), The Spine, or Spinal may refer to: At the base of the skull, the foramen ovale is one of the larger of the several holes that transmit nerves through the skull. Just lateral to the clivus bilaterally is the foramen lacerum, proximal to its anastomosis with the Circle of Willis. Those rights may have expired, been forfeited, expressly waived, or may be inapplicable. It is composed of the endocranium and the lower parts of the skull roof. The bone consists of two portions. Both wings also have a triangular process projecting inferiorly which are known as the spine(s) of the sphenoid bone. It serves as the origin for the sphenomandibular ligament. The foramen spinosum is one of two foramina located in the base of the human skull, on the sphenoid bone. Base of skull. It serves as the origin for the sphenomandibular ligament.