Exam 2 - Movements of Scap Flashcards
Elevation - muscles producing movement
- Trapezius m., descending part (prime mover)
- Levator scapulae m.
- Rhomboids m.’s
Elevation - nerve to muscles
- spinal accessory n. (CN XII)
- dorsal scap n.
Elevation - range of mvmt (angular rotation, linear displacement)
10-12cm
Depression - muscles producing movement
- Gravity (prime mover)
- Pec major m., inferior sternocostal head
- Latissimus dorsi m.
- Trapezius m., ascending part
- Serratus anterior m.
Pectoralis minor m.
Depression - nerve to muscles
- Pectoral nerves
- Thoracodorsal n.
- Spinal accessory n.
- Long thoracic n.
- Medial pectoral n.
Depression - range of mvmt
10-12cm
Protraction - muscles producing movement
- Serratus anterior m. (prime mover)
- Pectoralis major m.
- Pectoralis minor m.
Protraction - nerves to muscles
- Long thoracic n.
- Pectoral nerves
- Medial pectoral n.
Protraction - range of mvmt
40-45 degrees; 15 cm
Retraction - muscles producing movement
- Trapezius m., middle part (prime mover)
- Rhomboids m.’s
- Latissimus dorsi m.
Retraction - nerves to muscles
- spinal accessory n.
- Dorsal scapular n.
- Thoracodorsal n.
Retraction - range of mvmt
40-45 degrees; 15 cm
Upward rotation - muscles producing movement
- Trapezius m., descending part (prime mover)
- Trapezius m., ascending part
- Serratus anterior m. (prime mover)
Upward rotation - nerves to muscles
- Spinal accessory n.
- Long thoracic n.
Upward rotation - range of mvmt
60 degrees
inferior angle: 10-12cm
superior angle: 5-6cm
Downward rotation - muscles producing movement
- Gravity
- Levator scapulae m.
- Rhomboid m.’s
- Latissimus dorsi m. (prime mover)
- Pectoralis major m., inferior sternocostal head
- Pectoralis minor m.
Downward rotation - nerves to muscles
- Dorsal scapular n.
- Thoracodorsal n.
- Lateral and medial pectoral n.’s
- Medial pectoral n.
Downward rotation - range of mvmt
60 degrees
inferior angle: 10-12cm
superior angle: 5-6cm
