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8 Cards in this Set

  • Front
  • Back
Name the joints of the pectoral girdle
1. Sternoclavicular
2. Acromioclavicular
3. Glenohumeral
4. Scapulocostal
What are the 7 muscles that run from the trunk to the scapula (i.e. no involvement in the arm)?
1. Trapezius
2. Serratus anterior
3. Rhomboid major
4. Rhomboid minor
5. Levator scapulae
6. Pectoralis minor
Describe the features of trapezius:
1. Origin
2. Insertion
3. Nerve supply
4. Action
1. Origin:
- Occiput
- Ligamentum nuchae
- Vertebral spinous processes of C7 to T12
2. Insertion:
- Spine of scapula
- Acromion
- Lateral third clavicle
3. Nerve Supply: Spinal Accessory Nerve CN X1
4. Actions: Elevation, retraction, depression, rotation of scapula (doesn't lift arm)
Describe the features of serratus anterior:
1. Origin
2. Insertion
3. Nerve supply
4. Movement
1. Origin:
Digitations from upper 8 ribs outer surface
2. Insertion:
Costal surface medial border scapula
3. Nerve Supply:
Long thoracic nerve of Bell C5 ,6 ,7
4. Actions: Protraction of scapula, upward rotation of lateral angle of scapula, holds scapula against chest
What is winged scapula?
- Usually occurs on damage to the long thoracic nerve C5-7
- Serratus anterior no longer able to work, so scapula not held to thoracic wall
- Patient unable to raise the upper limb fullly or to push with it
Describe the features of rhomboid major and minor:
1. Origin
2. Insertion
3. Nerve supply
4. Movement
1. Origin:
- Minor spinous processes C7 - T1
- Major spinous processes T2 - T5
2. Insertion: Medial border of scapula
3. Nerve Supply: Dorsal scapular nerve C4,5
4. Action: Retraction
Describe the features of levator scapulae:
1. Origin
2. Insertion
3. Nerve supply
4. Movement
1. Origin: Transverse processes C1 – C4
2. Insertion: Superior angle
and upper medial border of scapula
3. Nerve Supply: Dorsal scapular nerve C5, small twigs from C3,4
4. Action: Elevation , rotation downwards of scapula
Describe the features of pectoralis minor:
1. Origin
2. Insertion
3. Nerve supply
4. Movement
1. Origin: Anterior aspect of 3rd – 5th ribs
2. Insertion: Coracoid process of scapula
3. Nerve Supply: Medial pectoral nerve C8,T1
4. Action: Protraction, depression, rotation (downwards) of scapula

NB land mark muscle for the axillary artery