Interval 6 Flashcards
Muscles that cause DEPRESSION of the pectoral (shoulder) girdle
- pectoralis major
- trapezius, lower part
- latissimus dorsi
Muscles involved in ELEVATION of the Pectoral Girdle
- levator scapulae
2. trapezius, upper part
Muscles involved in PROTRACTION of pectoral (shoulder) girdle
- serratus anterior
2. pectoralis minor
Muscles involved in RETRACTION of pectoral girdle
- Rhomboid major and minor
2. Trapezius, middle fibers
Muscles involved in LATERAL ROTATION of scapular (in abduction) in pectoral girdle
- serratus anterior, lower half
2. trapezius, upper and lower parts
Muscles involved in MEDIAL ROTATION of scapular (in adduction) in pectoral girdle
- rhomboid major and minor
- levator scapulae
- pectoralis minor
Innervation of levator scapulae (and major segments)
dorsal scapular (C4,5)
Innervation of trapezius (and major segments)
accessory (C1-5)
Innervation of rhomboid major and minor (and major segments)
dorsal scapular (C5)
Innervation of pectoralis minor (and major segments)
medial pectoral (C7,8)
Innervation of latissimus dorsi (and major segments)
Thoracodorsal (C6,7,8)
Innervation of pectoralis major (and major segments)
medial pectoral (C6-T1)
Innervation of serratus anterior (and major segments)
long thoracic (C5,6,7)
Actions of LEVATOR SCAPULAE
- ELEVATION
2. MEDIAL ROTATION OF SCAPULAR (in adduction)
Actions of TRAPEZIUS
upper part: ELEVATION MEDIAL ROTATION (in adduction) lower part: DEPRESSION MEDIAL ROTATION (in adduction) middle: RETRACTION