Anatomy Midterm (Slides 1-158) Flashcards
(222 cards)
There are a total of __ vertebrae but only __ of them are moveable
There are a total of 33 vertebrae but only 24 of them are moveable
Fill in the blanks: cervical spine (_ vertebrae) thoracic spine (\_\_ vertebrae) lumbar spine (_ vertebrae) sacrum (_ fused vertebrae) coccyx (_ fused vertebrae)
cervical spine (7 vertebrae) thoracic spine (12 vertebrae) lumbar spine (5 vertebrae) sacrum (5 fused vertebrae) coccyx (4 fused vertebrae)
T/F: Each vertebra is numbered from top to bottom.
True
What is the key function of intervertebral discs?
Weight-bearing
T/F: There is no intervertebral disc between C1 and C2
True
Each Intervertebral disc has a fibrous outer layer called the _______ ______.
Annulus fibrosis
The annulus of an intervertebral disc surrounds the inner substance which is called the ________ _______.
Nucleus pulposus
Are the intervertebral discs innervated? Are they vascularized?
They are aneural, except in the peripheral 1/3rd.
They are avascular.
Are the following spinal segments lordotic or kyphotic? cervical thoracic lumbar sacral
cervical (lordotic)
thoracic (kyphotic)
lumbar (lordotic)
sacral (kyphotic)
The ________ and _______ curves are termed primary (bc they develop during the fetal period)
The thoracic and sacral curves.
The ________ and _______ are termed secondary (bc they develop when the infant starts lifting their head and walking).
The cervical and lumbar curves.
Large, heavy anterior part of the vertebra.
Vertebral body
Vertebral bodies get _______ as you progress inferiorly.
Larger
The part of the vertebra that encloses the vertebral foramen.
Vertebral arch
The arch is formed anteriorly by 2 ______s.
Pedicles
The pedicles project __________ from both sides of the __________ part of the vertebral body
They project posteriorly from both sides of the superior part of the vertebral body.
As the pedicles project posteriorly, they meet 2 ________.
Laminae
The laminae meet posteriorly to form a _______ ________.
Spinous process
A total of _ articular processes arise from the arch of each vertebra.
4
What is the a.k.a. for zygapophysial joints
Articular joints
This is the area between the superior and inferior articular processes (the most common fracture site)
Pars articularis
The vertebral notches of 2 adjacent vertebrae form an almost complete ring called the _________ _______.
Intervertebral foramen
Upper cervical spine: C_-_
Lower cervical spine: C_-_
Upper cervical spine: C 1-2
Lower cervical spine: C 3-7
The C1 vertebra has an articular facet for the ____ of C2.
Dens