Unit 5 Lab Manual Flashcards
Axial Skeleton
Skull, vertebral column, and bony thorax
Appendicular skeleton
arms and legs
Vertebral column
series of bony vertebrae posterior to the ventral body cavity
vertebrae
bones of the spine
intervertebral discs
cartilage discs that withstand extreme compression, pushing, and other forces
what type of cartilage has the function of resisting compression?
fibrocartilage
intervertebral foramen
found laterally between adjacent vertebrae
what is the purpose of the intervertebral foramen?
to allow for the passage of spinal nerves
chronic pain can be caused by…
a bulging disc pressing on a spinal nerve
Vertebral foramen
opening in each vertebrae to allow the spinal cord to pass through.
vertebral cavity
formed by all of the vertebral foramen
Vertebral Body
the large disc-shaped bony portion on the anterior side
vertebral arch
the arch of bone emerging from the body of the vertebrae. composed of the pedicles and laminae
pedicles
portions of the arch that attach to the vertebral body. Pedicles means little feet and forms the base or feet of the vertebral arch
laminae
the portion that connect the two pedicles. Lamina means bridge and the laminae connect the two pedicles like a bridge
transverse processes
two lateral processes within the transverse plane coming off the vertebral arch
superior articular processes
two processes projecting superiorly
inferior articular processes
two processes projecting inferiorly
spinous process
medial process that projects posteriorly
C1
atlas
C2
Axis
5 Sections of the spine
Cervical
thoracic
lumbar
(sacral - coccygeal)->fused
where are the cervical vertebrae located, and how many are there
neck, 7
where are the thoracic vertebrae located and how many are there
inferior to c-spine, 12
where are the lumbar vertebrae, and how many are there
lower back, 5
transverse foramina
two openings at the base of the transverse process, only found in cervical vertebrae
Thoracic vertebrae look like
head of giraffe
lumbar vertebrae look like
head of moose
dens (odontoid process)
tooth-like superior projection - forms an axis for the atlas to rotate around
bony thorax
comprised of the sternum, ribcage, and vertebral column
sternum
formed from the fusion of 3 segments, manubrium, body, and xiphoid process
manubrium
the most superior of the 3 segments of the sternum, resembles the knot of a tie or the letter M
Body
the biggest, bulkiest part of the sternum
xiphoid process
does not completely ossify in early adulthood and is still mostly hyaline cartilage until our forties.
how many set of ribs
12
3 kinds of ribs
True ribs
false ribs
floating ribs
how many true ribs
first 7 pairs of ribs
how many false ribs
next 3 pairs after true ribs
how many floating ribs
last 2 pairs of ribs that do not connect to the sternum