Axial Skeleton 2 Flashcards
How many bones in the vertebral column? How many in each division?
26
cervical-7
thoracic-12
lumbar-5
sacral-5 fused bones
coccygeal-3-5 fused bones
the strong outer layer of fibrocartilage of invertebral discs
annulus fibrosus
the inner gelatinous core of invertebral discs
nucleus polposus
What are primary curvatures?
outwardly bowing curves that are retained from the fetal position (thoracic & sacral)
What are secondary curvatures?
inward bowing curves that bring the spine into an overall upright position (cervical & lumbar)
What is the vertebral canal formed by?
successive vertebral foramina
What bone is this?
atlas; C1
What part is this?
superior articular facet
What part is this?
inferior articular facet
What part is this?
lateral mass
What part is this?
facet for dens
What part is this?
posterior tubercle
What part is this?
transverse foramen
What part is this?
anterior arch
What part is this?
posterior arch
What part is this?
transverse process
What part is this?
vertebral foramen
What part is this?
odontoid process (dens)
What part is this? Function?
transverse foramen; openings that transmit the vertebral arteries
What part is this?
superior articular facet
What part is this?
transverse process
What part is this?
body (centrum)
What part is this?
spinous process
What part is this?
inferior articular process
What part is this?
lamina
What bone is this?
axis; C2
What kind of vertebra is this?
cervical
What part is this?
body (centrum)
What part is this?
bifid spinous process
What part is this?
inferior notch
Which vertebra have superior costal demifacets?
T2-T9
Which vertebra have inferior costal demifacets?
T1-T9
Which vertebra have full costal facets?
T1, T10, T11, T12
Define costal facet
articulations with the head of the ribs
Define transverse costal facet
articulation site for tubercle of rib
What part is this?
superior articular facet
What part is this?
superior costal demifacet
What part is this?
inferior costal demifacet
What part is this?
transverse costal facet
What part is this?
superior articular process
What part is this?
body (centrum)
What part is this?
inferior notch
What part is this?
transverse process
What part is this?
inferior articular process
What part is this?
spinous process
What part is this?
pedicle
What part is this?
lamina
What part is this?
vertebral arch
What kind of vertebra is this?
thoracic
What part is this?
full costal facet
What kind of vertebra is this?
lumbar
What part is this?
pedicle
What part is this?
lamina
What part is this?
superior articular process
What part is this?
superior articular facet
What part is this?
sacral canal
What part is this?
anterior sacral foramen
What part is this?
posterior sacral foramen
What part is this?
sacral hiatus
What landmark is this?
sacral promontory
What landmark is this?
ala
What landmark is this?
transverse ridges (lines)
What landmark is this?
median sacral crest
What landmark is this?
lateral sacral crest
What landmark is this?
auricular surface of sacrum
What landmark is this?
coccyx
What landmark is #2?
jugular notch
What part is #1?
manubrium
What part is #4?
body
What part is #5?
xiohoid process
What landmark is #3?
sternal angle
Which are true ribs and why?
Ribs 1-7 direct costal cartilage attachments to sternum
Which are false ribs and why?
Ribs 8-12, indirect or non-existent costal cartilage attachment to ribs
Which are floating ribs and why?
Ribs 11 & 12, no costal cartilage attachments to sternum
What is #6?
true ribs
What is. #7?
non-floating false ribs
What is #8?
floating false ribs
What is #9? What is it formed by?
costal margin; costal cartilages of ribs 7-10
What part is this?
head
What part is this?
neck
What part is this?
articular tubercle
What landmark is this?
shaft
What landmark is this?
costal groove
What is this?
costal angle
Right or left rib?
Right
Right or left rib?
Left
What part is this?
intervertebral foramen
