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45 terms

glenohumeral joint movement

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Flexion definition
bending at the joint so that the angle between the bones is decreased
Flexion (major muscles)
Upper Pec major, anterior deltoid
Upper Pectoralis major (origin)
medial clavicle
Pectoralis Major (insertion)
lateral lip of bicipital groove of humerus
Anterior Deltoid (origin)
lateral clavicle
Deltoid (insertion)
deltoid tuberosity of humerus
Extension definition
bending at joint that increases the angle between bones
Extension (major muscles)
Lower Pec major, latissimus dorsi, teres major
Lower Pectoralis major (origin)
costil cartilage of ribs 1-6 and sternum
Lower Pectoralis major (insertion)
lateral lip of bicipital groove on humerus
latissimus dorsi (origin)
Posterior iliac crest, and sacrum, spinous processes of T7-L5 vertebrae, and lower 3 ribs
latissimus dorsi (insertion)
medial side of bicipital groove on humerus
Teres Major (origin)
lateral border of scapula
Teres Major (insertion)
medial lip of bicipital groove on humerus
Abduction definition
side motion away from the midline
Abduction (major muscles)
Upper pec major, anterior, middle and posterior deltoid, supraspinatus
deltoid- anterior, middle, posterior (origin)
lateral clavicle, acromion process of scapula, spine of scapula
deltoid- anterior, middle, posterior (insertion)
deltoid tuberosity of humerus
supraspinatus (origin)
supraspinous fossa of scapula
supraspinatus (insertion)
greater tubercle of humerus
adduction definition
side motion towards the midline
adduction (major muscles)
Lower pec major, latissimus dorsi, teres major
middle deltoid (origin)
acromion process of scapula
middle deltoid (insertion)
deltoid tuberosity of humerus
posterior deltoid (origin)
spine of scapula
infraspinatus (origin)
infraspinous fossa of scapula
infraspinatus (insertion)
greater tubercle of humerus
teres minor (origin)
lateral border of scapula
teres minor (insertion)
greater tubercle of humerus
horizontal abduction definition
movement in horizontal plane away from midlin
horizontal abduction (major muscles)
middle, posterior deltoid, infrapinatus, teres minor
horizontal adduction definition
movement in the horizontal plane towards the midline
Horizontal adduction (main muscles)
Upper and lower pec major, coracobrachialis, anterior deltoid
Diagonal Abduction
side to side movement diagonally from the midline out
Diagonal Adduction
side to side movement diagonally to the midline
Internal Rotation
shaft of bone rotates inward (towards the body)
External Rotation
shaft of bone rotates outward (usually away from the body)
Coracobrachialis (origin)
coracoid process of scapula
Coracobrachialis (insertion)
medial shaft of humerus
Subscapularis (origin)
subscapular fossa of scapula
Subscapularis (insertion)
lesser tubercle of humerus
Diagonal Abduction (major muscles)
middle, posterior deltoid, infraspinatus, teres minor
Diagonal adduction (major muscles)
upper and lower pec major, coracobrachialis, anterior deltoid
Internal rotation (main muscles)
upper and lower pec major, subscapularis, latissimus dorsi, teres major
external rotation (major muscles)
infraspinatus, teres minor