Anatomy Four
Anterior spine and thorax
To Review
What do you think is the first
muscle(s) to activate when you begin
movement?
Do you know of any other muscles
the aid with cervical extension?
3.
1.
4.
2.
Provides extension,oblique capitis inferior
rotates the head.
1
Atlantoccipital joint – ellipsoidal – two
sets of movements Atlas, pg 171
Synergists of movement, pg 242-243
Atlanto axial joint – pivot joint- rotation only
Axis, pg 171
Synergists of movement, pg 242
Ellipsoidal Joint
Atlanto-occiptial
joint
Allows for
Flexion/Extension
Lateral Flexion
Pivot joint
Atlantoaxial joint
Allows for
rotation
Gliding joints
Articular Facet
Joints
Allow for movement
of the vertebral
column,
flexion/extension,
lateral flexion, and
rotation
Where the bodies of the vertebrae meet are amphiarthrodial joints
2
Longus colli and longus capitis, pg 260
Actions and relationships
Sternocleidomastoid, pg 244-245
Origin, insertion and action
Scalenes, pg 246-247
Origin, insertion and action as a group
Why are they important to neck/arm work?
3
Bony Landmarks
Pg 171
171
Least movable of the vertebrae. Facets are
in the frontal plane and allow for free
movement of lateral flexion.
More information of thoracic vertebrae pg 172
Facets are in the sagittal plane, great for flexion
and extension. These vertebrae support a lot of
weight.
More information of lumbar vertebrae pg 172
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Movements of the spine
Synergists on pgs 194-195
Be sure to work the cross section views in your
workbook. They will help you with the relationship and
muscle placement around the spine and abdomen.
The relationship of the abdominal muscles, pg 209
5
Transverse abdominus, pg 211,
Actions and relationships
Extermal oblique, pg 210,
Internal oblique pg 211 (O and I shown)
Actions, Origin and Insertion, relationships
Rectus Abdominus, pg 210, origin, insertion and action
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True ribs
False ribs
Floating ribs
Pg 173
Where the ribs attach to the sternum are
Classified as cartilaginous joints
Costochondral = ribs to cartilage
Chondralsternal = cartilage to sternum (actually
a gliding synovial joint)
Intrachondral = between cartilage of ribs 5 - 10
Elevation and depression, synergists, pg 195
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The diaphragm, pg 213
Origin, insertion and actions
Intercostals
Posterior serratus inferior & superior
Pg 215-216
Actions
Trail Guide To the Body
Student Workbook
Pages: 84-86, 91, 95-97,
102-105, 108-111, 117
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