FPA- Musc Flashcards
What is the lamina and pedicle?
The lamina is the structure connecting the spinous process and transverse process (SLiT)
The pedicle is the structure between the vertebral body and transverse process (BeTween)
What does the foramen tranversarium allow passage to?
The vertebral arteries and veins
What type of joint is the atlanto-occipital joint and what is its action?
Condyloid synovial joint
40-50% of head flexion and extension
What type of joint is the atlanto-axial joint and what is its action?
Pivot joint around the odontoid process
50% neck rotation, very little flexion extension
What is the purpose and attachments of the alar and transverse ligaments?
Alar- limits range of neck rotation, dens-occipital bone
Transverse- stops dens breaking posteriorly and damaging vertebral cord, attaches to atlas lateral masses
What type of joint is a zygapophyseal joint and what is its purpose?
Plane joint, restricts/facilitates movement based on location e.g. thoracic will limit flexion/extension but allow rotation
Name the other name vertebral column ligaments take when close to the head?
Ligamentum flavum = posterior atlanto-occipital membrane
Supraspinous ligament = ligamentum nuchae
Anterior longitudinal ligament = Anterior atlanto-occipital membrane
Posterior longitudinal ligament = tectorial membrane
What is the function of strenocleidomastoid?
Bilateral flexion, ipsilateral lateral flexion, contralateral rotation
What is the main function of longus colli and capitus?
Maintain cervical lordosis and a segmental stabilizer
What is the main function of scalene muscles
Lateral flexion
What is the main function of the suboccipital muscles?
Assessing flexion, e.g. jolting up while sleeping
What is the general function of erector spinae and transversospinalis?
ES= primary movers
TS= stabilizers
What are the main nerve types in the dorsal and ventral rami?
V= Motor
D= Sensory and intrinsic back motor
What are the two aspects of the intervertebral disc and their functions?
Annulis fibrosis, a layer of fibrocartilage that keeps the vertebrae together for stability
Nucleus pulposis, mucoprotein gel shock absorber that keeps the vertebrae apart for mobility
What are the orientations of thoracic and lumbar zygapophyseal joints respectively?
T= Coronal, allows rotation
L= Sagittal, allows f/e
What is unique about L5 compared to typical lumbar vertebrae?
Wedge shaped
Inferior facet joint is coronally orientated to prevent slipping too far forward
Where does the spinal cord terminate and can be taken advantage of medically?
L2, lumbar spinal punctures can be performed due to the extra space
Where will intervertebral discs typically herniate and why?
Posterolaterally
Annulus fibrosis is thinner posteriorly, posterior longitudinal ligament means it goes lateral
Why is a laminectomy performed?
Increases volume and reduces pressure removing pain
What is the meaning of spondylolysis and spondyloisthesis?
Lysis= fracture of L5
Thesis= L5 moves anteriorly
What is the fiber direction for external oblique, internal oblique and transversus abdominis?
EO= Infero-medially
IO= Supero-medially
TA= Transverse
Q22
- Spinous Process
2.Inferior Facet Process - Superior Facet Process
- Pedicle
- Vertebral Body
- Epiphyseal Ring
- Vertebral Foramen
- Transverse Process
- Superior Facet Process
- Superior Vertebral Notch
- Vertebral Body
- Inferior Vertebral Notch
- Inferior Facet Process
- Spinous Process
- Transverse Process
Q23
- Articular Facets
- Facet for Dens
- Transverse Ligament
- Odontoid Process
- Facet for Dens
- Articular Facets
7/8. Superior and Inferior Articular Facets
Q24
- Costal Part of Transverse Process
- Vertebral Body
- Uncinate Process
- Tubercles
- Pedicle
- Articular Facets
- Lamina
- Bifid Process
- Vertebral Foramen
- Transverse Part of Transverse Process
- Foramen Transversarium
- Superior Articular Facet
- Foramen Transversarium
- Inferior Articular Facet
What type of joint is sternoclavicular joint?
Saddle type synovial
What type of joint is the acromioclavicular joint?
Plane synovial joint
What is the purpose of the coracoclavicular joint at the AC joint?
Prevents upward rotation of the clavicle
Where is the clavicle most often fractured?
Lateral 1/3 and Medial 2/3
What is the function of scapulo-humeral muscles?
Rotation and dynamic stabilizers, holds humeral head down during abduction to prevent grinding
How is the humerus most often dislocated
Anterior, as only tendon of subscapularis and arm pushed posteriorly acts as lever. Drops inferiorly due to gravity
What are the three purposes of scapulohumeral rhythm and what does it involve?
-Preserves length-tension relationship of rotator cuff muscles
-Prevents impingement between humerus and acromion
-Increases ROM at shoulder
Elevation of clavicle at SC joint, Scapular rotation at AC joint, Movement at GH joint, 2:1
What type of joint is both radioulnar joints?
Pivot type synovial
Which collateral ligament attaches to the anular ligament
LCL
What are the functions of the interosseous membrane?
Transmits force between radius and ulna
Increases surface area for muscle attachment
What type of joint is the wrist joint?
Condyloid joint
What are the three ligaments at the wrist to support medially?
Radioulnar, collateral, radiocarpal
What type of joint is the intercarpal joints?
Plane synovial
What kind of joints are the carpometacarpal joints and what are their movements?
Thumb saddle (F/E, Ab/Ad)
Others plane synovial
What kind of joints are metacarpophalangeal joints and what are their movements?
Thumb Hinge (F/E)
Others Condylar (F/E, Ab/Ad)
What kind of joint is the interphalangeal joints?
Hinge