UNIT 4.3 Flashcards
upright posture of humans is maintained by ?
axial skeleton,+ transmits the weight
which bone doesnt articulate with any others?
hyoid
function of hynoid bone?
Attachment site for muscles of the tongue,neck pharynx.
2 types of skeleton ?
- axial
- skull
- hynoid
- vertebral col
- auditory ossicles
- rib cage - appendicular
which curves retain original curvature of embronic vertebral col?
thoracic + sacral
infant hold head erect?
cervical convex dev
child sits up stands?
lumbar convex dev
names of vertebral column regions=
- cervical 7
- thoracic 12
- lumbar 5
- sacral 5
- coccygeal 3-4
abnormal curves
- scoliosis?
- lordosis
- kyphosis?
- Sideways curve to the spine
2, Pronounced curve lower back
3.More50 degrees curvature upper back
what is vertebral foramen?
spinal cord canal
vertebral arch?
circle of bone around the canal through which the spinal cord passes
DIFFERENT VERTEBRAE
- Cervical vertebra >transverse foramina.
2.thoracic vertebra >costal facets in laterals+transverse
3x spinous process
3.Lumbar vertebra > big body, short blunt horizontal spinous process
what has the odontoprocess?
axis which lets the atlas sit on it
function of atlas and axis
nodding + rotation movement of the head.
what is in the appendicular skeleton? 4
1) • Pectoral girdle (shoulder)
(2) • Upper limb
(3) • Pelvic girdle (hip)
(4) • Lower limb
