Lecture3. Vertebral Flashcards
(49 cards)
How many curvatures are there in the vertebral column? Name those curvatures
There are 5 curves in the vertebral column
- cervical
- thoracic
- lumbar
- sacral
- cocyx
How many vertebrae are present in each curvature? In total how many bony pieces are there?
There are 26 bony pieces.
- cervical: 7 bony pieces
- thoracic: 12 vertebrae
- lumbar: 5 vertebrae
- sacral: 1 fused vertebrae ( 5 fused vertebrae )
- coccyx: 1 fused vertebrae ( from 4 fused vertebrae)
Why do we have curvatures?
helps us to tolerate our vertical forces more efficiently
Which 3 curvatures have/allow movement?
the first 3: cervical, thoracic and lumbar
What are the 2 ways we categorize vertebrae?
- static vs dynamic
- primary vs secondary
What are the static and dynamic vertebrae
static: sacral, cocyx
dynamic: cervical, thoracic, lumbar
What are the primary and secondary vertebrae
primary: thoracic, sacral and cocyx
secondary: cervical ( move head) , lumbar (when you walk)
What are the basic components of the vertebrae?/ What are the common features of all vertebrae?
Always contains : body (centrum) and the vertebrae arch and there exists a vertebrae foramen ( stacks of it forms a vertebral canal).
What does the body of the vertebrae consist of
spongy bone
where is the spinal cord located?
vertebrae foramen
Name the components of the vertebral arch
pedicle is part of the vertebral arch.
Other components: lamina, transverse process, spinous process
What is scliosis
When you have lateral curvatures in your vertebrae
- if you are right handed then you will have it in the left
What process forms with the fusion of 2 laminae?
spinous process
What is the articular facet?
It is the articular surface of the articular process
What are the unique features of the cervical vertebrae?
- has a biforcated spinous process
- has a foramen at the transverse process
What is the name of the 1st cervical vertebrae?
atlas
What are the unique features of the atlas
- it has no body
- there are 2 arches ( anterior and posterior)
What does the superior articular facet of the lateral masses of the atlas connects with
occipital condyle
What is the name of the 2nd cervical vertebrae
axis
What is the function of dens ( part of C2/axis)
allows the rotation of the head. the dens articulates with the anterior arch of the atlas
What is the distinctive feature of the thoracic vertebrae?
Has a thick pointed (inferior direction) of the spinous process
What is the distinctive feature of the lumbar vertebrae?
largest vertebrae you can find, has short but very thick spinous process
How does the size of the body change as we look at the vertebrae from the cervical to the lumbar portion
the body increases in size, we need more support
What are the features of the sacrum.
- sarcal ala
- apex
- body of the sacarl vertebrae
- Sacral promontory
- Transverse ridges
- Sacral crest