Joint actions- what muscles? Flashcards
Extension of the vertebral column
splenius captius & splenius crevicis Erector spinae: Iliocostalis Longissimus Spinalis Transversospinalis: Semispinalis Multifidus Rotatores
Lateral flexion & rotation
Splenius capitus & splenius cervicus
Iliocostalis
Longissimus
Spinalis
Stabilize vertebrae & rotation to contralateral side
Transversospinalis:
Semispinalis
Multifidus
Rotatores
Elevates scapula
Trapezius- superior fibers
levator scapulae
Depression of scapula
Trapezius- inferior fibers
pectoralis minor
Retraction of scapula
Trapezius- middle fibers
Rhomboid major and minor
Protraction of scapula
pectoralis minor
serratus anterior
Upward rotation of scapula
serrates anterior
trapezius- superior & inferior fibers
Downward rotation of scapula
Levator scapulae
Rhomboid major & minor
Flexion of GHJ
Pectoralis major
Deltoid- anterior portion
Coracobrachilis
Biceps brachii (weak)
Extension of GHJ
Latissimus dorsi
Deltoid (posterior portion)
Triceps brachii- long head
Abduction of GHJ
Deltoid- middle portion after 15 degrees
supraspinatus- initial 15 degrees
Adduction of GHJ
Pectoralis major
Latissimus dorsi
Teres major
Subscapularis
Medial rotation of GHJ
pectoralis major latissimus dorsi deltoid- anterior portion Teres major subscapularis
Lateral rotation of GHJ
Deltoid- posterior portion
infraspinatus
teres minor