Chapter7 Flashcards
axial skeleton structure from 80 bones segregated in 3 major regions which are
- skull
- vertebral column
- thoracic cage
cranial bones are paired with
parietal and temoral bones and the unpaired frontal , occipital, sphenoid, and ethmoid bones
spans the width of the middle cranial fossa
sphenoid bone
-has paired sphenoidal sinuses
superior surface of the ethmoid is formed by the paired horizontal ____ ____
cribiform plates
- maxillae
- zygomatics
- nasals
- lacrimals
- palatines
- inferior nasal conchae
paired bones in facial skeleton
[mandible and vomer unpaire]
there are how many separate bones in the vertebrae
- inferiorly , none of them eventually fuse to form the scarum and the tiny coccyx, remaining 24 persists as indivuals separated by intervertebral discs
- first seven vertebrae of the neck
- next 12 of vertebrae
- 5 supporting lower back
- cervical
- thoracic
- lumbar
bones of the limbs and their girdles are collectively called
appendicular skeleton
consists of teh clavicle anteriorly an the scapula posteriorly
pectoral girldle/ shoulder girdle
phalanges in one hand
14
formed by the sacrum , pair of hip bones,
pelvic girdle