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Osteology Ch 4
Skull
35
Anthropology
4th Grade
01/18/2011

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Term
Skull
Definition
the entire body framework of the head, including the lower jaw
Term
Mandible
Definition
lower jaw
Term
Cranium
Definition
the skull with out the mandible
Term
Calvaria
Definition
the cranium without the face
Term
Calotte
Definition
Calvaria without the base
Term
Splanchnocranium
Definition
facial skeleton
Term
Neurocranium
Definition
the braincase
Term
Ear Ossicles
Definition
three pairs of tiny bones associate with hearing
Term
Number of Bones in a Human Skull
Definition
28, including the ossicles, but excluding the hyoid
Term
Sagittal Suture
Definition
interlocking articulations along the midline between the parietal bones
Term
Coronal Suture
Definition
between the frontals and parietals
Term
Lambdoidal Suture
Definition
passes between the two parietals and the occipital
Term
Squamosal Sutures
Definition
unusual scalelike, beveled sutures between the temporal and parietal bones
Term
Frankfurt Horizontal (FH)
Definition
the convential way to orient the skull
-consists of a plane defined by three points: the right and left porion points and the left orbitale
Term
Alveolare
(Infradentale Superius)
Definition
the midline point at the inferior tip of the bony septum between the upper central incisors
Term
Prosthion
Definition
the midline point at the most anterior point on the alveolar process of the maxillae
Term
Nasion
Definition
the midline point where the two nasal bones and the frontal intersect
Term
Glabella
Definition
the most anterior midline point on the frontal bone, usually above the frontonasal suture
Term
Bregma
Definition
the ectocranial point where the coronal and sagittal sutures intersect
Term
Lambda
Definition
the ectocranial midline point where the sagittal and lambdoidal sutures intersect
Term
Opisthocranion
Definition
an instrumentally determined point at the rear of the cranium
Term
Inion
Definition
an ectocranial midline point at the base of the external occipital protuberance
Term
Opisthion
Definition
the midline point at the posterior margin of the foramen magnum
Term
Basion
Definition
the midline point on the anterior margin of the foramen magnum
Term
Gnathion
Definition
the most inferior midline point on the mandible
Term
Infradentale
Definition
the midline point at the superior tip of the suptum between the mandibular central incisors
Term
Orbitale
Definition
the lowest point on the orbital margin
Term
Euryon
Definition
the intrumentally determined ectocranial point of greatest cranial breadth
Term
Porion
Definition
the uppermost point on the margin of the external auditory meatus
Term
Gonion
Definition
a point along the rounded posteroinferior corner of the mandible between the ramus and the body
Term
frontal eminences
(frontal tubers, bosses)
Definition
dominate the ectocranial surface.
Term
Temporal Lines
Definition
mark the attachment of the temporalis muscle (a major elevator of the mandible), and its covering the temporal foscia (a facial sheet that covers the temporalis)
Term
Metopic Suture
(Frontal Suture)
Definition
a vertical suture between right and left frontal halves
Term
Meningeal Grooves
Definition
grooves for middle meningeal arteriaes. They dominate the endocranial surface of the parietal
Term
Squama
Definition
thin platelike bone that rises almost vertically to form the cranial walls and articulate with the parietals along the squamosal suture
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