Anatomy Upper Arm Muscles , Attachments, Innervation

Biceps Brachii Attachments

Coracoid Process, supraglenoid tubercle, radial tuberosity

Biceps Brachii Nerve

Musculocutaneous nerve

Anterior Compartment muscles of the arm

bicpes brachii, brachialis, coracobrachilalis.

Responsible for flexing arm

Posterior compartment arm muscles

triceps brachii, brachioradialis

Brachialis Attachments

mid-distal anterior humerus, coronoid process of ulna

Brachialis nerve

musculocutaneous

Triceps Brachii attachments

long head: infraglenoid tubercule

lateral head: posterior superior humerus

medial head: posterior inferior humerus

Triceps brachii nerve

radial

brachioradialis attachments

posteriolateral distal humerus, lateral distal radius

brachioradialis nerve

radial

supinator attachments

lateral epicondyle of humerus, proximal radius

supinator nerve

radial

Pronator teres attachments

medial epicondyle of humerus, lateral mid-radius

Pronator quadratus attachments

distal anterior ulna and radius

pronator teres nerve

median

pronator quadratus nerve

median n

Trapezius attachments

occipital bone

scapular spine

t7-t12

trapezius nerve

cranial nerve 11 (acessory nerve)

lats attachments

t7-t12

intertubercular groove of humerus

illiac crest

lats nerve

thoracodorsal

rhomboids attachments

medial border of scapula

c7-t5

rhomboids nerve

dorsal scapular nerve

pectoralis major nerve

lateral and medial pectoral nerves

pectoralis minor nerve

medial pectoral nerve

pectoralis major attachments

medial clavicle

sternum/costal cartilage

intertubercular groove of humerus

pectoralis minor attachments

coracoid process of scapula

ribs 3-5

serratus anterior nerve

long thoracic

serratus anterior attachments

ventral medial scapular border

lateral ribs 1-8

coracobrachialis attachments

coracoid process of scapula

medial mid humerus

coracobrachilais nerve

musculocutaneous

deltoid attachments

scapular spine/acromion process

lateral clavicle

deltoid tuberosity

deltoid nerve

axillary

shoulder muscles

coracobrachilais, deltoid, teres major, teres minor, supraspinatus, infraspinatus, subscapularis

Rotator cuff muscles

infraspinatus, supraspinatus, teres minor, subscapularis

supraspinatus nerve

suprascapular nerve

supraspinatus attachments

supraspinous fossa

greater tubercule

infraspinatus attachments

infraspinous fossa

greater tubercule

infraspinatus nerve

infrascapular nerve

teres minor attachment

greater tubercule

middle part of lateral scapular border

teres minor nerve

axillary nerve

subscapularis attachments

lesser tubercule

subscapular fossa

subscapularis nerve

upper + lower subscapular nerve