Axial Skeleton Flashcards
(24 cards)
Surround and protect the brain
Provide surface features that allow attachment of head and neck muscles
Contribute to the housing and protection of special sense organs
The singular frontal, occipital, ethmoid, and sphenoid
The paired temporal and the paired parietal
Cranial bones
Form the underlying scaffold for the face
Provide passages for air and food
Provide an anchor site for the teeth
Provide anchor sites for muscles of the face
Help form cavities for the special sense organs (working in concert with the cranial bones)
The singular mandible and vomer
The paired maxillary, zygomatic, nasal, lacrimal, palatine, and inferior nasal conchae
Facial Bones
The largest and which surrounds the brain,
formed by the cranial bones.
Cranial cavity
Contain eyeballs, blood vessels, muscles, nerves, and lacrimal glands that secrete tears.
Formed by parts of seven bones:
Orbital cavity
Contains passages for air and special sensory neurons for smell; it is considered the first part of the respiratory tract.
Formed by several bones that are lined with mucous membranes:
Nasal Cavity
Contains teeth, tongue, a passage for both food and air, and most of the salivary glands
It is considered to be the first part of the gastrointestinal tract
The roof is formed by the hard palate (which is also the floor of the nasal cavity)
Maxillae and mandible bones form the front and side walls of this cavity
This cavity is unique in that it lacks a bony floor and bony back wall; the floor and bottom parts are formed by soft tissues including both muscle and connective tissue
Oral Cavity
t is the only bone in your body that does not articulate with any other bone
s position in the neck is maintained by a combination of ligaments and muscles that tether the hyoid to both the styloid process
serve as important sites of attachment for muscles involved in swallowing and phonation
Hyoid Bone
associated with the neck
cervical vertebrae
that articulate with the rib bones
thoracic vertebrae
associated with the lower back region
lumbar vertebrae
that articulate with the pelvic bones
Sacral vertebrae
at the very end of the vertebral column
coccygeal vertebrae
sit between adjacent bodies and cushion/absorb the physical shock to the column as we actively move around.
vertebral discs
stabilizes the rib cage and protects vital organs
manibrium contains notches that articulate with pectoral girdles and attach to first ribs
Body contains notches for articulations with 2nd and 7th rib
xiphoid process is where abdominal muscles attach to sternum
Bones of the sternum
the ___ is formed by 12 pairs of rib bones and their associated anterior costal cartilage
rib cage
true ribs, each attached to the sternum via intercostal cartilage
Ribs 1-7
false ribs, share costal cartilage
ribs 8-12
floating ribs, do not attach to sternum
ribs 11-12
total bone mass/ density
orientation of forces on bone
material properties of the bone
Factors that influence bone breakage
occurs on the convex side of a curved bone
greenstick fracture
fractures result in at least two bone fragments
comminuted
runs perpendicular to the long axis of a bone
transverse fracture
fracture runs at an angle to the long axis of the bone
oblique
runs a helical course around a bone
spiral fracture