the axial skeleton Flashcards
components of the axial skeleton
Skull
Hyoid Bone
Vertebral column
Ribs
Sternum
how many cranial bones does the skull have
8
how many facial bones does the skull have
14
how many cranial bones does the skull have(neurocranium)
8
what do neurocranium bones enclose
the brain
what do viscerocranium bones enclose
digestive and respiratory organs
the skull has 3 surtures that articulate what
the parietal,frontal and occipital bones
what are the three surtures
coronal-which lies anteriorly and between frontal and parietal
what are the three surtures
coronal suture-which lies anteriorly and between frontal and parietal
lamboid suture-which lies posteriorly,has an inverted v appearance and articulates occipital and parietal
sagittal surture-lies in midline and articulates parietal bones and connects coronal and lambdoid
the frontal bone has
supraorbital ridges and the orbital plate
what does the parietal bone articulate to
Frontal bone anteriorly (via Coronal suture)
Inferiorly
Sphenoid bone (via Sphenoparietal suture)
Temporal bone (via Squamous suture)
Occipital bone posteriorly (via Lambdoid suture)
temporal bone is in four parts which are
squamous part which is made up of the zygomatic arch and mandibular fossa
the tympanic division
mastoid part
petrous part
the occipital condyle articulates to
C1 vertebra
facts about the mandible
Body
Lies horizontally and houses teeth
Ramus
Runs obliquely from the body
Coronoid process lies anteriorly
Condylar process lies posteriorly
Mental protuberance (Chin)
Mental spines lie posteriorly
what is the hyoid bone made up of
it is made up of the greator horn,lesser horn and a body component
