Arm Muscles Flashcards
what is the torque of bicep brachii
flexor and stabilizer at shoulder
elbow flexor when supinated
forearm supinator if pronated
what is the torque of the coracobrachialis
assists GH flexion and abduction
what is the torque of the brachialis
flexor at elbow
what is the torque of the triceps
extensor at shoulder
elbow extensor
resists dislocation
what is the torque of the anconeus
assists elbow extensor
what are the attachments of the biceps brachii
proximal: long head- supraglenoid tubercle & short head- tip of coracoid process
distal: radial tuberosity on radius
what is the innervation & blood supply of biceps brachii
musculocutaneous nerve (C5-C7)
brachial artery
what are the attachments of the coracobrachialis
proximal- coracoid process
distal- middle medial 1/3 of the humerus
what is the innervation & blood supply of the coraobrachialis
musculocutaneuous nerve (C5-C7)
brachial artery
what are the attachments of the brachialis
proximal- distal anterior 1/2 of humerus
distal- ulna: coronoid process and coronoid tuberosity
what is the innervaton and blood supply of the brachialis
musculocutaneous nerve (C5-C7) & some lateral branch of radial nerve (C5,C7)
bracial artery
what are the attachments of the triceps brachii
proximal heads (3):
- long: infraglenoid tubercle scapula
- lateral: posterior surface humerus
- medial: posterior surface humerus
distal: olecranon process on ulna
what is the innervation and blood supply of the triceps brachii
radial nerve (C6-C8)
deep branch brachial artery
what are the attachments of the anconeus
proximal: humerus lateral epicondyle
distal: lateral olecranon surface, posterior ulna
what is the innervation of the anconeus
radial nerve (C7-T1)
