Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
29 Cards in this Set
- Front
- Back
Deltoid
Anterior Part |
Origin: Lateral third of clavicle
Insertion: Deltoid tuberosity of humerus Innervation: Axillary n. (C5+6) Main Action: Anterior part: flexes and medially rotates arm at shoulder |
|
Deltoid
Middle part |
Origin: Acromion
Insertion: Deltoid tuberosity of humerus Innervation: Axillary n. (C5+6) Main Action: abducts arm at shoulder |
|
Deltoid
Posterior part |
Origin: Spine of scapula
Insertion: Deltoid tuberosity of humerus Innervation: Axillary n. (C5+6) Main Action: extends and laterally rotates arm at shoulder |
|
Subscapularis (rotator cuff muscle)
|
Origin: Subscapular fossa of scapula
Insertion: Lesser tubercle of humerus Innervation:Upper and lower subscapular n. Main Action: medially rotates arm at shoulder and adducts it; helps hold humeral head in glenoid cavity |
|
Supraspinatus (rotator cuff muscle)
|
Origin: Supraspinatus fossa
Insertion: Greater tubercle of humerus Innervation: Suprascapular n. Main Action: Helps deltoid abduct arm at shoulder. Acts as rotator cuff muscle |
|
Infraspinatus (rotator cuff muscle)
|
Origin: Infraspinatus fossa of scapula
Insertion: Greater tubercles of humerus Innervation: Suprascapular Main Action: Laterally rotates arm at shoulders helps hold head in glenoid cavity |
|
Teres minor (rotator cuff muscle)
|
Origin: Lateral border of scapula, upper 2/3
Insertion: Greater tubercle of humerus Innervation: Axillary n. (C5+6) Main Action: Laterally rotates arm at shoulder; helps to hold head in glenoid gavity |
|
Teres major
|
Origin: Dorsal surface of inferior angle of scapula, lower 1/3
Insertion: Medial lip of inter tubercular groove of humerus Innervation: Lower subscapular n. (C5, 6) Main Action: Adducts arm and medially rotates shoulder |
|
Coracobrachialis
|
Origin: Tip of coracoid process of scapula
Insertion: Middle third of medial surface of humerus Innervation: Musculocutaneous n. (C5, 6) Main Action: Helps to flex and adduct arm at shoulder |
|
Triceps brachialis (long head)
|
Origin: Infraglenoid tubercle of scapula
Insertion: Proximal end of olecranon of ulna and fascia of forearm Innervation: Radial n. (C6,7,8) Main Action: Active in extension against resistance; may help stabilize shoulder joint and assist in arm adduction |
|
Triceps brachialis (lateral head)
|
Origin: Posterior surface of humerus
Insertion: Proximal end of olecranon of ulna and fascia of forearm Innervation: Radial n. (C6,7,8) Main Action: Active in extension against resistance |
|
Triceps brachialis (medial head)
|
Origin: Posterior surface of humerus; inferior to radial groove
Insertion:Proximal end of olecranon of ulna and fascia of forearm Innervation: Radial n. (C6,7,8) Main Action: Powerful forearm extensor (prime mover) |
|
Anconeous
|
Origin: Lateral epicondyle of humerus
Insertion: Lateral surface of olecranon and superior part of posterior surface of ulna Innervation: Radial n. (C7-T1) Main Action: Assists triceps in extending elbow |
|
Brachialis
|
Origin: Distal half of anterior humerus
Insertion: Coronoid process and tuberosity of ulna Innervation: Musculocutaneous n. (C5+6) Main Action: Flexes forearm at elbow in all positions |
|
Brachioradialis
|
Origin: Lateral supracondylar ridge of humerus
Insertion: Lateral surface of distal end of radius Innervation: Radial n. (C5,6,7) Main Action: Flexes forearm at elbow |
|
Supinator
|
Origin: Lateral epicondyle of humerus; radial collateral and anular ligaments; crest of ulna
Insertion: Lateral, posterior and anterior surfaces of proximal third of radius Innervation: Radial n. (deep branch) (C7,8) Main Action: Supinates forearm |
|
Pronator teres
|
Origin:Medial epicondyle of humerus and Coronoid process of ulna
Insertion: Middle of lateral surface of radius Innervation: Median n. (C 6,7) Main Action: Pronates forearm and flexes elbow |
|
Pronator quadratus
|
Origin: Distal anterior surface of ulna
Insertion: Distal anterior surface of radius Innervation: Median n. (anterior interosseous) (C8,T1) Main Action: Pronates forearm |
|
Palmaris longus
|
Origin: Medial epicondyle of humerus
Insertion: Palmar aponeurosis (fascia of palm) Innervation: Median nerve (C7, 8) Main Action: Flexes hand at wrist; tightens palmar aponeurosis |
|
Flexor carpi ulnaris
|
Origin: Humeral head: medial epicondyle of humerus Ulnar head: olecranon of ulna
Insertion: Pisiform bone, hook of hamate bone and fifth metacarpal bone Innervation: ulnar nerve (C7,8) Main Action: Flexes hand at wrist and adducts it |
|
Flexor carpi radialis
|
Origin: Medial epicondyle of humerus
Insertion: Base of second metacarpal bone Innervation: Median nerve (C6,7) Main Action: Flexes and abducts hand at wrist |
|
Flexor digitorum superficialis
|
Origin: Humeroulnar head: medial epicondyle of humerus. Radial head: superior anterior radius
Insertion: Bodies of middle phalanges of medial four digits Innervation: Median (C7,8, T1) Main Action: Flexes middle phalanges of medial four digits |
|
Flexor pollicis longus
|
Origin: Anterior surface of radius and adjacent interosseus membrane
Insertion: Base of distal phalanx of thumb Innervation: Median nerve (anterior interosseous) Main Action: Flexes phalanges of first digit (thumb) |
|
Flexor digitorum profundus
|
Origin: Proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane
Insertion: Bases of distal phalanges of medial four digits Innervation: medial part: Ulnar n. (C8, T1) Lateral part: median n. (C8, T1) Main Action: Flexes distal phalanges of medial four digits: assist with flexion of wrist |
|
Extensor carpi radialis longus
|
Origin: Lateral supracondylar ridge of humerus
Insertion: Base of second metacarpal bone Innervation: Radial nerve (C6,7) Main Action: Extends and abducts hand at wrist |
|
Extensor carpi radialis brevis
|
Origin: Lateral epicondyle of humerus
Insertion: Base of third metacarpal bone Innervation: Radial nerve (deep branch) Main Action: Extends and abducts hand at wrist |
|
Extensor carpi ulnaris
|
Origin: Lateral epicondyle of humerus and posterior ulna
Insertion: Base of fifth metacarpal bone Innervation: Radial nerve (posterior interosseous) Main Action: Extends and adducts hand at wrist |
|
Extensor digitorum
|
Origin: Lateral epicondyle of humerus
Insertion: Extensor expansions of medial four digits Innervation: Radial nerve (posterior interosseous) Main Action: Extends medial four digits at metacarpophalangeal joints; extends hand at wrist joint |
|
Biceps Brachii
|
Origin: Short head: coracoid process of scapula
Long head: Supraglenoid tubercle of scapula Insertion: Tuberosity of radius and fascia of forearm via biciptial aponeurosis Innervation: Musculocutaneous nerve (C5,6) Main Action: Flexes forearm at elbow, supinates flexed forearm |