Muscles of the Arm: OINA Flashcards
Biceps brachii long head: Origin
Supraglenoid tubercle of scapula
Biceps brachii short head: Origin
Coracoid process of the scapula
Coracobrachialis: Origin
Coracoid process of the scapula
Brachialis: Origin
Front of lower half of humerus
Triceps long head: Origin
Infraglenoid tubercle of scapula
Triceps lateral head: Origin
Upper half of posterior surface of shaft of humerus
Triceps medial head: Origin
Lower half of posterior surface of shaft of humerus
Biceps brachii long head: Insertion
Tuberosity of radius and bicipital aponeurosis into deep fascia of forearm
Biceps brachii short head: Insertion
Tuberosity of radius and bicipital aponeurosis into deep fascia of forearm
Coracobrachialis: Insertion
Medial aspect of shaft of humerus
Brachialis: Insertion
Coronoid process of ulna/ ulnar tuberosity
Triceps long head: Insertion
Olecranon process of ulna
Triceps lateral head: Insertion
Olecranon process of ulna
Triceps medial head: Insertion
Olecranon process of ulna
Biceps brachii long head: Innervation
Musculocutaneous nerve; C5, C6
Biceps brachii short head: Innervation
Musculocutaneous nerve; C5, C6
Coracobrachialis: Innervation
Musculocutaneous nerve; C5, C6, C7
Brachialis: Innervation
Musculocutaneous nerve; C5, C6
Triceps long head: Innervation
Radial nerve; C6-8
Triceps lateral head: Innervation
Radial nerve; C6-8
Triceps medial head: Innervation
Radial nerve; C6-8
Biceps brachii: Action
Supinator of forearm and flexor of elbow joint
Coracobrachialis: Action
Flexes arm; weak adductor
BRachialis: Action
Flexor of elbow joint
Triceps: : Action
Extensor of elbow joint
