Muscles U/E Flashcards
(23 cards)
Upper trapezius
O: occipital protuberance, base of skull, cervical ligaments
I: acromion, lateral third of clavicle
N: spinal accessory nerve (CN 11)
A: elevation
Levator Scapulae
O: transvers processes C1-C4
I: superior angle of scapula
N: dorsal scapular nerve
A: elevation
Rhomboids (major & minor)
O: spinus processes C7-T5
I: medial border of scapula
N: dorsal scapular nerve
A: retraction
Serratus anterior
O: upper 9 ribs
I: medial border of scapula
N: long thoracic
A: protraction
pectoralis minor
O: ribs 3-5
I: coracoid process
N: medial pectoral nerve
A: protraction, depression
middle trapezius
O: spinus process T1-T5
I: spine of scapula
N: Spinal accessory (CN 11)
A: retraction
lower trapezius
O: T6-T12
I: base of scapular spine
N: CN 11
A: depression
Pectoralis major
O: medial half of clavicle, costal cartilage first 6 ribs
I: lateral lip of bicipital groove
N: medial and lateral pectoral nerve
A: internal rotation, adduction, horizontal adduction
Latissimus Dorsi
O: posterior ilium, spinus process of T6-sacrum
I: floor of bicipital groove
N: thoracodorsal nerve
A: adduction, internal rotation, extention
Deltoid
O: lateral third of clavicle, acromion, spine of scapula
I: deltoid tuberosity
N: axillary nerve
A: flexion, abduction, extention
Coracobrachialis
O: coracoid process
I: middle third of humerus
N: musculocutaneous
A: flexion
subscapularis
O: subscapular fossa
I: lesser tubercle
N: upper and lower subscapular nerve
A: internal rotation
supraspinatus
O: supraspinatus fossa
I: greater tubercle
N: suprascapular
A: abduction to 30
intraspinatus
O: infraspinatus fossa
I: greater tubercle
N: superscapular nerve
A: external rotation
teres minor
O: lateral border of scapula
I: greater tubercle
N: axillary nerve
A: external rotation
teres major
O: interior angle of scapula
I: medial lip of bicipital groove
N: lower subscapular nerve
A: adduction, internal rotation, extension
biceps brachii
O: corachoid process, supraglenoid tubercle
I: radial tuberosity
N: musculocutaneous
A: flexion, supination
brachialis
O: distal half of humerus
I: coronoid process
N: musculocutaneous
A: flextion
brachioradialis
O: supracondylar ridge
I: radial styloid process
N: radial nerve
A: pronation, supination, elbow flexion
triceps brachii
O: infraglenoid tubercle (long), proximal half of humerus (lateral), distal 2/3 humerus (medial)
I: olecranon process
N: radial nerve
A: extension
anconeous
O: lateral condyle (back of capitulum)
I: posterior proximal ulna
N: radial nerve
A: extention
supinator
O: lateral epicondyle, posterior proximal ulna
I: proximal radius
N: radial nerve
A: supination
pronator teres
O: medial epycondyle
I: middle 1/3 of radius
N: median nerve
A: pronation
