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skull anatomy 1
skull anatomy set 1 for comp
Question | Answer |
---|---|
What passes through the foramen magnum? | inferior medulla oblongata |
How do the occipital condyles sit and articulate? | they slope anteriorly to articulate with the atlas |
Major anatomy of the temporal bones: | squamous and tympanic portions, styloid process, zygomatic process, mastoid process. |
What form the TMJ? | the mandibular fossa and the condyle of the mandible |
The zygomatic process of the temporal bone articulates with this to form the: | the temporal process of the zygomatic bone to form the zygomatic arch |
Lambda | junction of the lambdoidal and sagittal sutures |
Vertex | highest point of the head |
Inion | EOP – external occipital protuberance |
What shape is the cranium? | oval, wider posteriorly |
Glabella | the smooth elevation between the superciliarry arches (between the eyebrows) |
The frontonasal suture is where? | at the junction of the frontal squama and nasal bones |
Nasion | midpoint of the frontonasal suture (bridge of the nose) |
Orbital plates | the horizontal portion of the frontal bone that forms the orbital roofs |
Cribiform plate | the horizontal portion of the ethmoid |
Crista galli | a thick conical process that projects superiorly from the anterior midline of the ethmoid bone |
Perpendicular plate | vertical portion of the ethmoid bone forming the superior bony septum |
Dorsum sellae | posterior boundry of the sella turcica |
Tuberculum sellae | anterior boundary of the sella turcica |
Posterior clinoid process | project anteriorly from the dorsum sellae |
Anterior clinoid process | project posteriorly from the dorsum sellae |
Petrous portion is found on what bone? | temporal |
Petrous portion | petrous pyramids, thickest densest bone in the cranium |
Petrous ridge | the upper border of the petrous portion |