Muscle Attachments Flashcards
Pectoralis Major Sternal Head PA
- Anterior manubrium and body of sternum
- anterior costal cartilages 1-6
Pectoralis Major Sternal Head DA
Lateral lip of intertubercular groove of humerus
Pectoralis Major Sternal Head action
Shoulder adduction, shoulder extension, shoulder IR
Pectoralis Major Sternal Head nerve supply
Medial and lateral pectoral nerves (C5-T1)
Pectoralis Major clavicular head PA
Medial 1/2 anterior clavicle
Pectoralis Major clavicular head DA
Lateral lip of intertubercular groove of humerus
Pectoralis Major clavicular head actions
Add, flex, ext, IR
Pectoralis Major clavicular head nerve supply
medial and lateral pectoral nerves (C5-T1)
Latissimus dorsi PA
(SIR)
- spinous processes of T6-S5 vertebrae
- iliac crest
- ribs 9-12
Latissimus dorsi DA
Floor of intertubercular groove of humerus
Latissimus dorsi actions
add, ext, IR
Latissimus dorsi nerve supply
thoracodorsal nerve (C6-8)
Trapezius PA
- external occipital protuberance of skull
- superior nuchal line of skull
- acromion of scapula
- ligametume nuchae
- spinous processes of C7-T12 vertebrae
Trapezius DA
- Lateral 1/3 clavicle
- acromian process
- medial end of spine of scapula
Trapezius actions
scapula elevation, depression, retraction, ER
Trapezius nerve supply
accessory nerve, anterior rami of 3rd and 4th cervical nerves
Rhomboid Major PA
spinous processes of T2-T5 vertebrae
Rhomboid Major DA
Medial border of scapula between base of spine and the inferior angle
Rhomboid Major actions
Retraction, IR
Rhomboid Major nerve supply
dorsal scapular nerve (C4-5)
Rhomboid minor PA
spinous process of C7-T1 vertebrae
Rhomboid minor DA
Medial border of scapula at base of spine
Rhomboid minor actions
Retraction, IR
Rhomboid minor nerve supply
Dorsal scapular nerve (C4-5)
*same as rhomboid major
Levator Scap PA
Transverse processes of C1-C3 vertebrae
Levator Scap DA
Medial border of scapula between superior angle and base of spine
Levator Scap actions
Elevatio, IR
Levator Scap nerve supply
- anterior rami of 3rd and 4th cervical nerves
- dorsal scapular nerve (C5)
Pectoralis Minor PA
Anterior surface to ribs 3-5
Pectoralis Minor DA
coracoid process
Pectoralis Minor actions
protraction, depression, IR
Pectoralis Minor nerve supply
Medial and lateral pectoral nerves (C5-T1)
Serratus anterior PA
anterior surface of ribs 1-8
Serratus anterior DA
Inferomedial border of scapula
Serratus anterior actions
Protraction, ER
Serratus anterior nerve supply
long thoracic nerve (C5-7)
Deltoid PA
- lateral 1/3 clavicle (anterior fibres)
- acromion process of scapula (middle fibres)
- spine of scapula (posterior fibres)
Deltoid DA
- deltoid tuberosity of humerus
Deltoid actions
abd, flex, Ext, IR, ER
Deltoid nerve supply
Axillary nerve (C5-6)
Coracobrachialis PA
Coracoid process
Coracobrachialis DA
medial side mid-shaft humerus
Coracobrachialis actions
Add, Flex
Coracobrachialis nerve supply
Musculocutaneous nerve (C5-7)
Teres major PA
Posterior surface of scapula near inferior angle
Teres major DA
medial lip of intertubercular groove of humerus
Teres major actions
Add, IR
Teres major nerve supply
Lower subscapular nerve (C5-7)
ROTATOR CUFF
Teres Minor PA
Lateral border of the scapula
ROTATOR CUFF
Teres Minor DA
- greater tubercle of the humerus
- capsule of the shoulder joint
ROTATOR CUFF
Teres Minor actions
ER
ROTATOR CUFF
Teres Minor nerve supply
Axillary nerve (C5-6)
ROTATOR CUFF
Subscapularis PA
subscapular fossa of scapula (anterior)
ROTATOR CUFF
Subscapularis DA
- lesser tubercle of the humerus
- capsule of shoulder jt
ROTATOR CUFF
Subscapularis actions
IR
ROTATOR CUFF
Subscapularis NS
upper and lower subscapular nerves (C5-7)
ROTATOR CUFF
Supraspinatus PA
Supraspinous fossa of scapula
ROTATOR CUFF
Supraspinatus DA
- greater tubercle of the humerus
- capsule of shoulder jt
ROTATOR CUFF
Supraspinatus actions
Abd
ROTATOR CUFF
Supraspinatus NS
suprascapular nerve (C5-6)
ROTATOR CUFF
Infraspinatus PA
Infraspinous fossa of scapula
ROTATOR CUFF
Infraspinatus DA
- greater tubercle of humerus
- capsule of shoulder jt
ROTATOR CUFF
Infraspinatus actions
ER
ROTATOR CUFF
Infraspinatus NS
suprascapular nerve (C5-6)
MUSCLES OF THE ARM
Biceps Brachii short head PA
coracoid process
MUSCLES OF THE ARM
Biceps Brachii short head DA
- radial tuberosity
- deep fasica of ulnar side of forearm via the bicipital aponeurosis
MUSCLES OF THE ARM
Biceps Brachii short head actions
flex, supination
MUSCLES OF THE ARM
Biceps Brachii short head nerve supply
musculocutaneous nerve
Biceps brachii long head PA
- supraglenoid tubercle of scapula
- superior part of glenoid labrum
Biceps Brachii long head DA
- radial tuberosity
- deep fascia of ulnar side of forearm via the bicipital aponeurosis
Biceps brachii long head actions
- shoulder flex
- elbow flex (more efficient when elbow is pronated)
- forearm supination
Biceps brachii long head NS
musculocutaneous nerve
Triceps brachii long head PA
- infraglenoid tubercle of scapula
- inferior part of glenoid labrum
Triceps brachii long head DA
- olecranon process of ulna
- posterior capsule of elbow joint
triceps brachii long head Actions
shoulder ext, shoulder add
triceps brachii long head nerve supply
radial nerve
triceps brachii long head nerve supply
radial nerve
triceps brachii lateral head PA
posterior shaft of humerus lateral to the spiral groove
triceps brachii lateral head DA
- olecranon process of ulna
- posterior capsule of elbow jt
triceps brachii lateral head actions
shoulder add
shoulder ext
elbow ext
triceps brachii lateral head actions
shoulder add
shoulder ext
elbow ext
triceps brachii lateral head NS
radial
triceps brachii medial head PA
- posterior shaft of the humerus medial to the spiral groove
triceps brachii medial head DA
- olecranon process of ulna
- posterior capsule of elbow jt
triceps brachii medial head actions
elbow ext
(although, hard to separate the other actions so can just say do all)
triceps brachii medial head NS
radial