Practical 3 Flashcards
Nasal Bones
form bridge of nose.
Ethmoid Bone
Cribiform Plate &Crista Galli
Crista Galli
cock’s comb. Vertical projection, point of attachment for dura matter.
Cribiform Plate
bony plates lateral to crista galli
Vomer Bone
Blade shaped bone. forms posterior/ inferior nasal septum
Palatine Bones
paired bones posterior to palatine processes. forms posterior hard palate and part of orbit. meet at median palatine process
Hyoid Bone
Located in the throat above larynx. Horseshoe shaped. Point of attachment for tongue/ neck muscles.
Sphenoid Bone
Keystone of cranium. superior orbital fissure,greater/lesser wings, sella turcica, optic fissue (canal)
Superior Orbital Fissures
jagged openings in orbit. provides passage for cranial nerves III, IV, V, and VI.
Greater Wings
Larger portion of sphenoid bone exteriorly anterior to temporal. forms part of eye orbit.
Lesser Wings
Bat shaped portion of sphenoid anterior to sella turcica
Sella Turcica
Turk’s Saddle. saddle shaped region in sphenoid midline.
Optic Foramen
circular hole through which optic nerve passes.
Lacrimal Bone
fingernail sized bone. forms medial orbit walls between maxilla and ethmoid
Coronal Suture
Point of articulation of parietal bones with the frontal bone
Sagittal Suture
Mid-line articulation point of the two parietal bones
Squamosal Suture
Point of articulation of the temporal bone with the parietal bone.
Lambdoidal Suture
Point of articulation of the occipital bone and the parietal bones.
Anterior Fontanelle
Soft stop on top of skull. just forward of center.
Posterior Fontanelle
soft spot on the back of the skull
Vertebrae
24 single bones &2 fused. Makes up vertebral column.
Body of vertebrae
AKA Centrum. Rounded central portion of vertebrae. faces anteriorly in human vertebral column.
Sphenoidal Fontanelle
soft spot near temporal bone
Mastoid Fontanelle
soft spot between temporal and occipital bones
Vertebral Foramen
Opening enclosed by the body and vertebral arch. Passageway for spinal cord.
Transverse Processes
Two lateral projections from vertebral arch
Spinous Process
Single medial and posterior projection from vertebral arch.
Lamina
connects transverse and spinous processes
Pedicle
protrudes off body to become superior articular facet
Superior Articular Surfaces
Allows for articulation with vertebra above
Inferior Articular Surface
Allows for articulation with vertebra below
Cervical Vertebra
Upper most 7 vertebrae. Include axis and atlas
Transverse Foramen
Holes in transverse process in cervical vertebra
Atlas
C1. No body. Lateral processes contain large concave depressions that receive occipital condyles of skull. “Yes” movement.
Axis
C2. Pivot for rotation of axis. “No” movement.
Dens/Odontoid Process
Pivot point for rotation of axis.
Thoracic Vertebra
12 vertebra below cervical. Articulate with ribs.
Costal Facets
Articulate with the head of the rib.
Lumbar Vertebra
5 below thoracic. Lower back
Sacrum
5 fused vertebra. Below Lumbar.
Apex
Articulate with coccyx
Sacral Promontory
Top of sacrum. articulates with lumbar.
Median Sacral Crest
Dorsal side. bumps on midline that would be spinus process if not fused.
Lateral Sacral Crest
Dorsal side. Bumps off midline that would be transverse processes if not fused.
Coccyx
3-5 vertebrae. articulate with sacrum
Sternum
Breastbone
Manubrium
Uppermost part of sternum. Looks like knot of tie
Clavicular Notches
Point of articulation between the sternum and clavicle
Gladiolus
Body of sternum
Xiphoid Process
inferior end of sternum
Ribs
- 1-7 true, 8-12 false.
Head
Articulates with costal facets
Neck
Between head and Articular Tubercle
