Module 25 - Skeletal System: Axial Skeleton Flashcards
How many bones are in the human body
206
what is the division of the skeletal system
axial and appendicular skeleton
give # of bones and portions that make up the axial skeleton
- 80 bones
– lie along longitudinal axis
– Skull, hyoid bone, vertebrae, ribs, sternum, auditory ossicles
yellow area in pic
give # of bones and portions that make up the appendicular skeleton
- 126 bones
– Upper & lower limbs and pelvic and
pectoral girdles
green area in pic
what are the surface features of bones and their specific functions?
Surface features: ridges, projections, openings, depressions
Specific functions:
– Passageway for blood vessels and nerves
– Joint formation
– Muscle, tendon and ligament attachment
how many bones, auditory ossicles and hyoid bones are there in the skull
22
6
1
what are the 2 portions of the skull
cranial bones and facial bones
give the 6 cranial bones
parietal, temporal, occipital, frontal, sphenoid, ethmoid bones
give the 8 facial bones
zygomatic, lacrimal, nasal, palatine bones and the maxilla, mandible, vomer, inferior nasal concha
what makes up the zygomatic arch
zygomatic process + temporal process
the mandible is attached to the skull through…
mandibular fossa
what bone is butterfly shaped
sphenoid bone
what is the only moveable bone in the skull
mandible
what processes make space for teeth?
alveolar process of maxilla and alveolar process of mandible
function of jugular foramen
where veins exit
function of carotid foramen
entrance of arteries into cranial cavity
function of occipital condyle
allows for movement of the skull
function of styloid process
attachment point for muscles of the tongue
the hard palate is made up of…
palatine process and palatine bone (horizontal plate)
give the 7 bones of the orbit
frontal, sphenoid, palatine, zygomatic, lacrimal, ethmoid bones and the maxilla
describe the hyoid bone
