Axial Skeleton Flashcards
Name all sutures on the skull
- coronal suture
- sagittal suture
- squamous suture
- lambdoidal suture
Features on frontal bone
- supraorbital foramen
- supraorbital notch
- coronal suture
Features on Temporal bones
- External acoustic meatus/canal
- Mandibular fossa
- Mastoid process
- Styloid process
Features on Occipital bone
-External Occipital Protuberance
-Foramen Magnum
- Occipital Condyle
- Lambdoidal suture
Features on Sphenoid bone
- Greater wing
- Lesser wing
- Superior orbital fissure
Sella Turcica
- Hypophyseal fossa (depresson on the sella turcica)
Features on Ethmoid Bone
-Crista Galli
- Cribiform Plate
- Perpendicular plate
- Middle nasal conchae
Features on Maxilla Bone
- Infraorbital foramen
- Anterior nasal spine
- Palatine process (floor of nasal cavity)
- Palatine bone (located posterior of palatine process)
What bones make up the nasal septum?
Vomer and perpendicular plate of the ethmoid
Features on Mandible bone
- Mental foramen
- Mandibular condyle
- Coronoid process
How many vertebrae on the vertebral column?
33 vertebrae
Cervical 7
Thoracic 12
Lumbar 5
Sacrum 5
Coccyx 4
Abnormal Vertebral Curvatures
Scoliosis
Abnormal Lateral curvature
Abnormal Vertebral Curvatures
Hyperkyphosis
Abnormal posterior thoracic curvature
Abnormal Vertebral Curvatures
Hyperlordosis
abnormal anterior lumber curvature
General Strutures on a vertebra
- Body
- Laminae (Posterior “arch”)
- Pedicule (Anterior “arch”)
- Spinous process
- Transverse process
- Superior articular process/facet
- Inferior articular process/facet
- Intervertebral foramen
- Intervertebral discs
Pads between vertebrae
Intervertebral Discs
What makes an intervertebral foramen?
An inferior notch of vertebrae above
A superior notch of vertebrae below
Cervical Vertebrae
Smallest and lightest
Only vertebrae that has holes in transverse process (Transverse Foramen)
C1 Atlas
“Yes” motion
Flat
No body
Supports the skull
C2 Axis
“No” motion
Has dens
Thoracic Vertebrae
Has costal facets (attachment for 12 ribs)
Spinous process pointed and angled downwards
Larger than Cervical vertebrae
Lumbar vertebrae
Thick, stout bodies
Blunt spinous processes
Largest of all vertebrae
Sacral vertebrae
5 vertebrae that fuse during young adulthood
- Fusion begins at 16, finishes at 26
Articulates with pelvic bones and is the posterior wall of pelvic cavity
Sacral vertebrae
5 vertebrae that fuse during young adulthood
- Fusion begins at 16, finishes at 26
Articulates with pelvic bones and is the posterior wall of pelvic cavity
3 regions of Sternum
Manubrium
Body
Xiphoid process
