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