pba mm

Anterior scalene

O: TVP C3-6 I: rib 1 N: ventral rami cervical spinal n K: Flex + SF @ sp j

Splenius capitis

o: SP C4-T4 (blow up tax)

i: mastoid + lateral ⅓ superior nuchal line 

n: dorsal rami sp nerves co-re lvls

k: ext + SF + ipsi rot @ sp j

Longus capitis

o: TVP C3-5

i: inf surface basilar part of occiput (ant. to foramen magnum)

n: cervical sp n (ventral rami C1-3)

k: flex neck / head @ sp j

Trapezius - upper

o: EOP + medial ⅓ superior nuchal line + sp C7

I: lateral ⅓ clavicle acromion 

K: elevate + retract + upward rot scapula @ ScC j

Rhomboid major

O: SP T2-T5

I: medial border scapula (below root of spine)

N: dorsal scapular (C4-5)

K: elevation + retraction + downward rot ScC j

Latissimus dorsi

O: TVP T7-L5 + sacrum + posterior iliac crest 

(via thoracolumbar fascia + lowest 4 ribs + inf angle scapula)

I: medial lip bicipital groove humerus 

N: thoracodorsal n (C6, C7, C8)

K: IR + add + ext GH

Pectoralis major

O: medial ½ clavicle + sternum + CC rib 1-7 

I: lateral lip bicipital groove humerus 

N: medial + lateral pectoral n

K: add + IR + flex + ext GH

Pectoralis minor

o: rib 3-5

i: CORACOID process scapula 

n: medial + lateral pectoral n (c5, 6, 7-8, t1)

k: protract + depress + downward rot @ scapulocostal j

+ elevate ribs 3-5 @ ScC & Csp j

Spinalis thoracis

o: SP T11-L2

i: SP T4-T8

n: dorsal rami of spinal nerves 

at corresponding lvls

k: ext + SF trunk & neck @ spinal j 

Serratus anterior 

o: anterior surface medial border scapula 

i: rib 1-9

N: long thoracic 

k: protract + upward rot @ scapulothoracic j

Anterior Deltoid

O: lateral 1/3 clavicle + acromion 

I: deltoid tuberosity 

N: axillary (C5-6)

K: aBd + flex + med rot + horizontal flex arm

Infraspinatus

O: infraspinous fossa 

I: mid facet greater tubercle humerus

N: suprascapular (C5, 6)  

K: lat rot GH

Biceps brachii

O: coracoid scapula (short) + supraglenoid tubercle (long)

I: radial tuberosity (+ bicipital aponeurosis)  

n: musculocutaneous (c5-6)

k: flex elbow j + supinate RU j + flex GH j

Brachialis

o: distal ½ ant. shaft humerus 

i: ulnar tuberosity  

n: musculocutaneous 

k: flex forearm @ elbow

Coracobrachialis

O: coracoid scapula 

I: medial middle ⅓ shaft humerus

N: musculocutaneous (C5-7)

K: flex + add GH

Triceps brachii

o: infraglenoid tubercle scapula (long) + prox ⅓ post shaft humerus (lateral) + distal ⅔ humerus (medial) 

I: Olecranon ulna 

N: radial (C6, 7, 8)

K: ext elbow j + ext GH j

Flexor digitorum profundus

o: prox ½ medial ant. Ulna + int membrane

i: distal phalanges 2-5

n: median + ulnar  (C8-T1)

k: flex digits 2-5 @ MCP, PIP, DIP + flex @ wrist j

Flexor pollicis longus

o: ant radius + interosseus membrane + medial epicondyle humerus + coronoid process ulna 

i: base distal phalanx thumb

n: median (C7-8)

k: flex thumb @ cmc, mcp, ip + flex wirst j

Extensor carpi radialis brevis

o: CET

i: post side base 3rd metacarpal

n: radial (C7-8) 

K:ext + radial deviate @ wrist j

extensor digitorum

O: CET 

I: DDE digits 2-5 (mid + distal) 

n: radial (C7-8)  

K: ext digits 2-5 mcp, pip, dip + ext wrist j

o: trapezium + scaphoid (tubercles) + flexor retinaculum 

i: prox phalanx thumb (lateral side)

n: median (C8-T1)

k: aBd thumb

o: TVP L1-L4 + 12th rib 

i: post iliac crest 

n: lumbar plexus (T12-L3)

K: elevates ipsi pelvis w/ SF lumbar 

+ ant pelvic tilt w/ ext lumbar 

+ SF trunk 

+ depress 12th rib 

+ ext trunk