Anterior Arm And Forearm Muscles Flashcards
What are the muscles of the anterior arm
Brachialis, Coracobrachialis, Biceps brachii
Biceps brachii has 2 parts of
Long and short head
Biceps brachii long head origin is
Supraglenoid tubercle of scapula
Biceps brachii short head origin is
Coracoid process
Biceps brachii insertion is
Radial tuberosity and fascia of bicipital aponeurosis
Biceps brachii action of
Flexion of elbow, supination of forearm
Biceps brachii short head action also
Resists shoulder dislocation
Biceps brachii innervation
Musculocutaneous n (C5C6
Biceps brachii vasculature
Brachial artery
Coracobrachialis origin
Coracoid process
Coracobrachialis insertion
Middle 1/3 of medial shaft of humerus
Coracobrachialis action
Helps flex and adductor arm. Resist shoulder dislocation
Coracobrachialis innervation
Musculocutaneous nerve C5C6
Coracobrachialis vasculature
Brachial artery
Brachialis origin
Distal 1/2 of anterior humerus
Brachialis insertion
Coronoid process and ulnar tuberosity
Brachialis action
Strongest flexor of elbow
Brachialis innervation (2)
Musculocutaneous nerve C5C6 and radial nerve C5C7
Brachialis vasculature
Brachial artery
Muscles of the anterior forearm superficial layer are
(PFPF) pronator Teres, flexor carpi radialis, palmaris longus, flexor carpi ulnaris
Pronator Teres origin
Ulnar: coronoid process
Humeral: medial epicondyle of humerus
Pronator Teres insertion
Lateral surface of radius
Pronator Teres action
Pronates and flexes forearm
Pronator Teres innervation
Median nerve C6C7
Pronator Teres vasculature
Ulnar and radial artery
Flexor carpi radialis origin
Medial condyle of humerus
Flexor carpi radialis insertion
Base of 2nd MC
Flexor carpi radialis action
Flexion and radial deviation
Flexor carpi radialis innervation
Median N C7C8
Flexor carpi radialis vasculature
Ulnar artery
Palmaris longus origin
Medial epicondyle of humerus
Palmaris longus insertion
Distal flexor retinaculum and palmar aponeurosis
Palmaris longus action
Flexion of writs and tenses palm
Palmaris longus innervation
Median N C7C8
Palmaris longus vasculature
Ulnar artery
Flexor carpi ulnaris origin
Humeral: medial epicondyle of humerus
Ulnar: olecranon and posterior border of ulnar
Flexor carpi ulnaris insertion
Pisiform, hook of hamate, 5th MC
Flexor carpi ulnaris action
Flexes and ulnar deviation of wrist
Flexor carpi ulnaris innervation (rebel)
Ulnar n C7C8
Flexor carpi ulnaris vasculature
Ulnar artery
Anterior forearm intermediate layer muscle
Flexor digitorum superficialis
Flexor digitorum superficialis origin
Humeral-ulanar: medial epicondyle and coronoid process
radial: radius below radial tuberosity
Flexor digitorum superficialis insertion
Sides of middle phalanges of medial 4 digits
Flexor digitorum superficialis action
Flexion of PIP joints, stronger MCP joint flexion
Flexor digitorum superficialis innervation
Median N C7-T1
Flexor digitorum superficialis vasculature
Ulnar artery
Anterior forearm deep muscles are
Flexor digitorum profundus, flexor pollicis longus, pronator quadratus
Flexor digitorum profundus origin
proximal 3/4 of medial and anterior surface of ulna and IOM
Flexor digitorum profundus insertion
Medial (ulnar); bases of distal 4th and 5th digit
Lateral (radial(; bases of distal 2nd and 3rd digit
Flexor digitorum profundus action
Flexion at DIP
Flexor digitorum profundus innervation
Medial (ulnar); ulnar n (C8, T1)
Lateral (radial); median n (C8-T1)
Flexor digitorum profundus vasculature
Ulnar and anterior interosseous artery
Flexor pollicis longus origin
Anterior surface of radius and IOM
Flexor pollicis longus insertion
Base of distal phalanx of thumb
Flexor pollicis longus action
Flexion of digit 1
Flexor pollicis longus innervation
Median N C8-T1
Flexor pollicis longus vasculature
Anterior interosseous artery
Pronator quadratus origin
Distal 1/4 of anterior ulna
Pronator quadratus insertion
Distal 1/4 of anterior radius
Pronator quadratus action
Pronates forearm, binds radius and ulna together
Pronator quadratus innervation
Median n C8-T1
Pronator quadratus vasculature
Anterior interosseous artery