Skeletal Flashcards
bones are segregated into:
axial and appendicular skeleton
how many bones does an average adult has?
206 bones
bones under the axial skeleton
- skull
- auditory ossicle
- hyoid bone
- vertebral column
- thoracic cage (rib cage)
bones under the appendicular skeleton
- upper limbs
- lower limbs
- two girdles
two kinds of girdles
- pectoralis girdle
- pelvic girdle
bones that are longer than wide
long bones
parts of the bones that consider as long bones
upper and lower limbs
bones that is relatively thin, flattened shape, and usually curved
flat bones
example of flat bones
skull bones, ribs, breatbone (sternum), and shoulder blades (scapulae)
bones that are round or nearly cube-shaped
short bones
example of short bones
wrist (carpal bones) and ankle (tarsal bones)
bones that have shapes that do not readily fit into the other categories
irregular bones
example of irregular bones
vertebrae and facial bones
skull is consist of how many bones
22 bones
8 cranial and 14 facial
house and protect the brain
cranial bones or cranium
forms the basis of the face; contain cavities for the eyes, nose, and mouth; attachment site for our facial expression muscles
facial bones
immovable joints that connects the cranial bones
sutures
four principal sutures
- coronal
- sagittal
- lambdoid
- squamous
the top of the skull which is often removed to view the interior is called
calvaria
8 bones of the cranium include:
- frontal bone
- two parietal bones
- two temporal bones
- occipital bone
- sphenoid bone
- ethmoid bone
connected to the two parietal bones by the coronal suture
frontal bone
known as forehead
frontal bone
a smooth region of bone between the two orbits in the frontal bone
glabella
forms the roof of both the orbit of the eye and the nasal cavity
frontal bone
one of the paranasal sinuses that the frontal bone has
frontal sinus
what does the frontal bone forms internally which supports the frontal lobes of the brain
anterior cranial fossa
joined medially by the sagittal sutures and connected to the occipital bone by the lambdoid suture
parietal bones
bones that make up the majority of the lateral portion of the skull along with the temporal bones
parietal bones
two sets of muscle attachment sites for the temporalis muscle that arch across the lateral surface of the parietal bone
superior temporal line and inferior temporal line
a major mastication (chewing) muscle
temporalis muscle
bones that are connected to the skull by the squamous sutures
temporal bones
it means “related to time”
temporal
three main regions of the temporal bone
- squamous part
- tympanic part
- petrous part
region of the temporal bone where parietal bone meets superiorly
squamous part
it extends from the squamous part anteriorly toward the zygomatic bone of the face
zygomatic process
bridge across the side of the skull
zygomatic arch
