muscles (origin/insertion/function) Flashcards

1
Q

supraspinatus

A
ROTATOR CUFF
origin: supraspinous fossa
insertion: greater tubercle 
primary function: stabilize humerus head
secondary function: abducts, laterally rotates
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2
Q

infraspinatus

A
ROTATOR CUFF
origin: infraspinous fossa
insertion: greater tubercle
primary function: stabilize humerus head
secondary function: laterally rotates
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3
Q

teres minor

A
ROTATOR CUFF
orgin: lateral border
insertion: greater tubercle
primary function: stabilize humerus head
secondary function: abducts, laterally rotates
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4
Q

subscapularis

A
ROTATOR CUFF
origin: sub scapular fossa
insertion: lesser tubercle
primary function: stabilize humerus head
secondary function: medially rotates
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5
Q

pectoralis major

A

SHOULDER MUSCLES
origin: upper is clavicle, lower is sternum + costal cartilage
insertion: lateral lip of bicipital groove
primary function: arm adduction, flexion, internal rotation

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6
Q

latissimus dorsi

A

SHOULDER MUSCLES

origin: lumber + lower half of thoracic spine, inner iliac crest + sacrum
insertion: bicipital groove
function: arm adduction, extension, internal rotation

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7
Q

deltoid

A
MOVES HUMERUS (AB duction)
origin: 
-anterior is clavicle
-lateral is acromion head, 
-posterior is lateral scapular spin border 
insertion: deltoid tuberosity
function:
-AH: flexes, medially rotates
-LH: abducts
-PH: extends, laterally rotates
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8
Q

coraco-brachialis

A

MOVES HUMERUS (AB duction)

origin: coracoid process
insertion: humerus shaft
function: arm flexion, adduction

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9
Q

teres major

A

MOVES HUMERUS (AB duction)

origin: lateral border
insertion: bicipital groove
function: medially rotates, arm extension, abduction

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