Cranium "Skull"
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| How many cranial bones are there? | show 🗑
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| show | This bone contributes to the formation of the forehead and the superior part of each orbit.
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| Squamous or Vertical Portion | show 🗑
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| show | Is the smooth raised prominence between the eyebrows just above the bridge of the nose.
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| show | Is the slight depression above each eyebrow.
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| show | The superior rim of each orbit
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| show | Is a small hole or opening within the SOM slightly medial to its midpoint
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| Orbital or Horizontal Portion | show 🗑
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| Orbital Plate | show 🗑
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| show | Separates each orbital plate.
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| The frontal bone articulates with ______ cranial bones: | show 🗑
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| Parietal Tubercles (Eminences) | show 🗑
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| show | The inferoposterior portion of the calvarium.
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| Squamous Portion | show 🗑
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| show | 6; 2 parietals, 2 temporals, sphenoid, and atlas.
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| External Occipital Protuberance or Inion | show 🗑
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| Foramen Magnum | show 🗑
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| show | Are oval processes with convex surfaces, with one on each side of the foramen magnum.
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| show | The two-part articulation between the skull and the cervical spine.
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| show | Are complex structures that house delicate organs of hearing and balance.
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| Zygomatic Process | show 🗑
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| show | The zygomatic process meets the temporal process of the zygomatic bone to form the easily palpated _____________________.
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| show | Into which the mandible fits to form the TMJ.
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| Each temporal bone is divided into _____ primary parts? | show 🗑
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| show | Is the thin upper portion that forms part of the wall of the skull.
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| Mastoid Portion | show 🗑
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| Petrous Portion | show 🗑
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| show | The upper border or ridge of the petrous pyramid.
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| show | TEA (top of the ear attachment).
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| show | Is an opening or orifice which serves to transmit nerves of hearing equilibrium.
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| Each temporal bone articulates with ____ cranial bones: | show 🗑
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| Sphenoid Bone | show 🗑
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| Sella Turcica | show 🗑
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| Hypophysys Cerebri or Pituitary Gland | show 🗑
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| show | Posterior to the sella turcica and is best seen laterally.
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| show | Is a shallow depression that begins on the posteroinferior aspect of the dorm sellae of the sphenoid bone and extends posteriorly to the foramen magnum at the base of the occipital bone.
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| Lesser wings | show 🗑
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| Anterior Clinoid Process | show 🗑
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| Greater Wings | show 🗑
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| show | Are seen as small opening on superior and oblique views.
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| show | These opening provide additional communication with the orbits for numerous cranial nerves and blood vessels.
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| show | Form part of the lateral walls of the nasal cavities.
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| show | 7.
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| The sphenoid also articulates with _____ facial bones. | show 🗑
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| Ethmoid Bone | show 🗑
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| show | Small horizontal portion; contains many small openings or foramina through which segmental branches of the olfactory nerves pass.
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| show | Projecting superiorly form the cribriform plate; which is derived from "rooster's comb".
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| Perpendicular Plate | show 🗑
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| Superior & Middle Nasal Conchae or Turbinates | show 🗑
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| show | Are suspended from the undersurface of the cribriform plate on each side of the perpendicular plate; help to form the medial walls of the orbits and lateral walls of the nasal cavity.
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| show | 11.
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| The ethmoid articulates with _____ cranial bones: | show 🗑
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| Sutures | show 🗑
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| show | Separates the frontal bone from the 2 parietal bones.
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| show | Separates the 2 parietal bones in the midline.
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| Lambdoidal Suture | show 🗑
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| show | Are formed by the inferior junction of the 2 parietal bones with their respective temporal bones.
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| Bregma | show 🗑
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| show | The posterior end.
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| Asterions | show 🗑
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| show | Left and right; are points at the junction of the frontal, parietals, temporals, and the greater wings of the sphenoid.
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| show | Membrane covered; Have 6 Fontanels:
-Anterior fontanel.
-Posterior fontanel.
-Left sphenoid fontanel.
-Right sphenoid fontanel.
-Left mastoid fontanel.
-Right mastoid fontanel.
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| AP Axial: Towne Method | show 🗑
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| Lateral Skull | show 🗑
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| PA Axial: Caldwell Method | show 🗑
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| show | - CR 0° PA.
- Petrous ridges over supraorbital margin.
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| show | - CR 25°-30° caudad .
- Petrous pyramids are projected at or just below the IOM to allow visualization of the entire orbital margin.
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| show | - CR parallel to OML.
- CR to glabella.
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| show | - CR perpendicular to IOML and IR.
- CR 1½" inferior to mandibular symphysis.
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| PA Axial: Haas Method | show 🗑
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| EAM (External Acoustic Meatus) | show 🗑
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| show | A line that is located between the global and the EAM.
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| OML (Orbitomeatal Line) | show 🗑
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| show | Is formed by connecting the IOM to the EAM.
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| There is __________ difference b/w the OML & IOML. | show 🗑
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| AML (Acanthiomeatal Line) | show 🗑
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| MML (Mentomeatal Line) | show 🗑
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| show | A line of junction of the lips to the EAM.
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| GAL (glabelloalveolar Line) | show 🗑
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| IPI (Interpupillary or Interorbital Line) | show 🗑
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| Inion | show 🗑
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| show | 47°.
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| Brachycephalic | show 🗑
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| show | 40°.
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Created by:
sassyrad
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