Muscle O, I, A, Innervation Flashcards
Biceps Brachii - Attachments
Long head - supraglenoid tubercle
Short head - coracoid process
Both to the radial tuberosity
Innervation to the biceps brachii
Musculocutaneous
Brachialis attachments
Distal half of ant humerus to the coronoid process and ulnar tuberosity
Innervation of the brachialis
Musculocutaneous AND radial
Biceps brachii function
Flexes and supinates forearm
Brachialis function
flexes forearm
Coracobrachialis attachments
Coracoid process to middle 1/3 of medial humerus
Coracobrachialis action
flexion and adduction of the humerus
Innervation of the coracobrachialis
musculocutaneous
Pronator teres attachments
sup (humeral) head = medial epicondyle
deep (ulnar) head = proximal ulna
Both to the lateral midshaft of the radius
Innvervation of the pronator teres
Median nerve
Pronator teres action
pronation
Palmaris longus attachments
Medial epicondyle to the palmar aponeurosis
Innervation of palmaris longus
median
Action of palmaris longus
flexes wrist
tenses the palmar aponeurosis
Flexor carpi radialis attachments
Medial epicondyle of humerus to the palmar base of Mc 2
Flexor carpi radialis innervation
Median
Action of the flexor carpi radialis
flexes the wrist
radial deviation of the wrist
Flexor carpi ulnaris attachments
Medial epicondyle and olecranon process to the hook of the hamate, pisiform, and Mc 5
Innervation of flexor carpi ulnaris
Ulnar
Action of the flexor carpi ulnaris
Flex wrist
Ulnar deviation
Flexor digitorum superficialis attachments
Medial epicondyle and proximal radius to the base of the intermediate phalanges of digits 2-5
Innervation of flexor digitorum superficialis
Median
Action of the flexor digitorum superficialis
flex PIP, MCP, and wrist
Flexor digitorum profundus attachments
Ulnar shaft and int membrane to the base of distal phalanx of 2-5
Innervation of flexor digitorum profundus
digits 2 and 3 = ant interosseous
digits 4 and 5 = ulnar
Action of flexor digitorum profundus
flex DIP, PIP, MCP, and wrist
Attachments of the flexor pollicis longus
Radial shaft and int mem to the base of the distal phalanx of digit 1