Basisphenoid bone in reptiles birds and many mammals a bone located at the base of the skull. Ba sĭ sfe noid an embryonic bone that becomes the back part of the body of the sphenoid.
The spheno occipital synchondrosis also known as the basiocciput synchondrosis is the synchondrosis between the basisphenoid and basiocciput bones which together when joined form the clivus.
Basi occiput and basisphenoid. Entire cephalic end of. In humans the basisphenoid is present in the embryo but later. We wish to add the 4 cases studied at the montreal neurological institute and the montreal general hospital because they represent the two major subdivisions of chordoma of the basiocciput and basisphenoid viz that in which the tumor presents in the nasopharynx one fifth of the cases and that in which it is confined to the cranial cavity and its walls.
A plain impression made by ink are unsatisfactory for fingerprint analysis. The pharyngeal tubercle is protuberant on the basilar portion of the occipital bone and is a bony protrusion for the connection of parts of the pharynx towards the base of the skull. Additional terms or revisions may be requested through our issue tracker at github.
Please contact us with any other questions about the mammalian phenotype ontology. This ontology is also used by the rat genome database. It is immediately in front of the bone that contains the opening through which the brainstem projects to connect with the spinal cord.
Your input is welcome. The total number of carpal bones in a child aged 16 yrs is a 4 b 6 c 8 d 10. 4 midplane sagittal section of base of head in a human embryo of approximately 3 months shows position of notochordal remnants in proximal cervical spine basiocciput and sphenoid.
It spreads out posteriorly towards the foramen magnum and via the temporal bones is bounded laterally. 0j post basisphenoid f r basiocciput pharyngeal wall f j axis fig. 1 anterior posterior axis nasion to opisthion named after the higher greater wing of the sphenoid.
Jian et al 2011 there location varying depending on whether they are at the upper clival basisphenoid or lower clival basiocciput region stippler et al 2009. When fused the synchondrosis is often called the spheno occipital suture this is a misnomer as anatomically it is not a suture. The basilar part of occipital bone is located directly posterior towards the body of the sphenoid in the midline.
Basisphenoid synonyms basisphenoid pronunciation basisphenoid translation english dictionary definition of basisphenoid. A basi occiput with basisphenoid b sagittal c coronal d lamdoid. Index and little fingers narrow as paired lateral bones internally rotate and move cephalad.
Basisphenoid and basiocciput move caudad as greater wings move slightly medial and cephalad.