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Muscles 2 SnowAP Flashcards

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5174645713Muscles that move the pectoral girdle. Muscles that move the glenohumeral joint. Muscles that move the elbow. Muscles that move the wrist joint, hand and fingers. Intrinsic muscles of the hand.Muscles of the pectoral girdle and upper extremity may be classified into what five groups?0
5174645714pectoralis minorIdentify: Origin: Sternal ends of the 3rd, 4th, and 5th ribs. Insertion: Coracoid process of the scapula. Action: Pulls scapula forward and downward.1
5174645715serratus anteriorIdentify: Origin: External surfaces of lateral parts of ribs 1-8/9. Insertion: Anterior vertebral border of the scapula. Action: Pulls scapula forward and downward.2
5174645716trapezius"Identify: Origin: Medial third of superior nuchal line, external occipital protuberance, nuchal ligament, and spines of C7 and all thoracic vertebrae. Insertion: Lateral third of clavicle, acromion process, and spine of scapula Action: Elevates, retracts and rotates scapula; superior fibers elevate; middle fibers retracts; inferior fibers depress scapula; superior and inferior fibers work together in superior rotation of scapula."3
5174645718levator scapulaeIdentify: Origin: Posterior tubercles of transverse process of C1-C4. Insertion: Superior part of vertebral border of scapula. Action: Elevates scapula and tilts its glenoid cavity inferiorly by rotating scapula.4
5174645721rhomboideus minor"Origin: Inferior portion of nuchal ligament and spinous processes of C7-T1 Insertion: Vertebral border of the scapula just below the level of the spine Action: Adducts scapula and rotates it to depress glenoid cavity"5
5174645722rhomboideus majorIdentify: Origin: Spinous process of T2-T5. Insertion: Vertebral border of the scapula from the inferior border of the rhomboideus minor to the inferior angle of the scapula. Action: Adducts scapula and rotates it to depress glenoid cavity.6
5174645725latissimus dorsi"Identify: Origin: Spines of sacral, lumbar, and lower thoracic vertebrae; iliac crest and lower 4 ribs Insertion: Intertubercular groove of the humerus Action: Extends, adducts, and rotates humerus medially; retracts shoulder."7
5174645726pectoralis majorIdentify: Origin: Clavicular head: Anterior surface of medial half of clavicle. Sternocostal head: Anterior surface of sternum, superior six costal cartilages and aponeurosis of external abdominal oblique. Insertion: Crest of greater tubercle of humerus. Action: Adducts and medially rotates humerus. Draws shoulder joint anteriorly and inferiorly.8
5174645727deltoidIdentify: Origin: Clavicle, acromion process, spine of the scapula. Insertion: Deltoid tuberosity of the humerus. Action: Anterior part: Flexes and medially rotates arm. Middle part: Abducts arm. Posterior part: Extends and laterally rotates arm.9
5174645728coracobrachialisIdentify: Origin: Coracoid process of the scapula. Insertion: Middle third of medial surface of humerus. Action: Flexes and adducts arm at shoulder joint.10
5174645729teres majorIdentify: Origin: Inferior angle and lateral border of scapula. Insertion: Crest of lesser tubercle of the humerus. Action: Medially rotates and adducts arm.11
5174645730subscapularisIdentify: Origin: Subscapular fossa. Insertion: Lesser tubercle of humerus. Action: Extends humerus, adducts and rotates arm medially.12
5174645732supraspinatus"Identify: Origin: Supraspinous fossa of the scapula. Insertion: Greater tubercle of the humerus. Action: Abducts and laterally rotates humerus."13
5174645735infraspinatus"Identify: Origin: Infraspinous fossa of the scapula Insertion: Greater tubercle of the humerus Action: Rotates arm laterally."14
5174645738teres minor"Origin: Superior part of axillary border of scapula Insertion: Greater tubercle of humerus Action: Rotates arm laterally"15
5174645739subscapularis, supraspinatus, infraspinatus, teres minorList the four muscles that make up the rotator cuff.16
5174645740To hold the head of the humerus in the glenoid cavity during movements of the shoulder joint.What is the main function of the rotator cuff?17
5174645741deep fasciaWhat separates the limbs into compartments?18
5174645742anterior (flexor) compartment and posterior (extensor) compartmentWhat two compartments occur in the brachium?19
5174645743biceps brachiiIdentify: Origin: Short head: Coracoid process of scapula. Long head: Supraglenoid tubercle of scapula. Insertion: Radial tuberosity and fascia of forearm via bicipital aponeurosis Action: Flexes and supinates forearm.20
5174645744brachialisIdentify: Origin: Distal half of anterior shaft of the humerus Insertion: Coronoid process of ulna Action: Flexes elbow21
5174645745brachioradialisIdentify: Origin: Proximal two thirds of lateral supracondylar ridge of humerus. Insertion: Lateral surface of distal end of radius. Action: Flexes elbow.22
5174645746triceps brachiiIdentify: Origin: Long head: Infraglenoid tubercle of scapula. Lateral head: Posterior surface of humerus superior to radial nerve groove. Medial head: Posterior surface of humerus inferior to radial nerve groove. Insertion: Olecranon process of the ulna. Action: Extends forearm. Long head steadies head of abducted humerus.23
5174645747pronator teresIdentify: Origin: Medial epicondyle of the humerus and coronoid process of ulna. Insertion: Middle of lateral surface of the radius. Action: Pronates forearm.24
5174645748pronator quadratusIdentify: Origin: Distal fourth of anterior surface of ulna. Insertion: Distal fourth of anterior surface of radius. Action: Pronates hand.25
5174645749supinatorIdentify: Origin: Lateral epicondyle of the humerus and crest of the ulna. Insertion: Lateral surface of the proximal third of radius. Action: Supinates forearm.26
5174645750flexorsIdentify this group of muscles in the anterior forearm: Origin: Medial epicondyle of the humerus; anterior, proximal ulna and radius; interosseous membrane. Insertion: Carpals, metacarpals, and phalanges. Action: Flex wrist and digits.27
5174645751extensorsIdentify this group of muscles in the posterior forearm: Origin: Lateral epicondyle of the humerus; posterior surfaces of the radius and ulna; interosseous membrane. Insertion: Carpals, metacarpals, and phalanges. Action: Extend wrist and digits.28
5174645752"carpal ligamentWhat is another name for the flexor retinaculum of the wrist?29
5174645754carpal tunnelThe flexor retinaculum of the wrist and the arch of the carpals form what structure?30
5174645755thenar groupWhat group of muscles forms the thick, fleshy mass at the base of the thumb and work to abduct, flex, or oppose the thumb?31
5174645756"hypothenar groupWhat group of muscles forms the small fleshy mass at the base of the fifth digit of the hand and work to abduct, flex, and oppose the 5th digit?32
5174645758midpalmar groupWithin the hand, what group of muscles lies between the 1st and 5th digits?33
5174645760lumbrical muscles"Identify: Origins - Tendons of a flexor which sends a tendon to the distal phlanx of digits 2-5.Insertions - Lateral sides of extensor expansions of digits 2-5. Action - Flex digits at metacarpophalangeal joints and extend interphalangeal joints"34
5174645761dorsal interosseiIdentify: Origin - Adjacent sides of two metacarpal bones. Insertions - Extensor expansions and bases of proximal phalanges of digits 2-4. Action - Abducts digits 2-4.35
5174645764palmar interossei"Identify: Origins - Palmar surfaces of metacarpals 2, 4, and 5 Insertions - Extensor expansions of digits and bases of proximal phalanges of digits 2, 4 and 5 Action - Adduct digits 2, 4, and 5"36
5174645765biceps brachiiWhat muscle flexes the elbow, but neither originates nor inserts on the humerus?37
5174645766extensor groupThe tendons of what muscle group can be seen on the dorsum of the hand?38
5174645767pectoralis majorWhat muscle forms the anterior border of the axilla?39
5174645768latissimus dorsi and teres majorWhat two muscles form the posterior border of the axilla?40
5174645769infraspinatusWhat muscle lies in the infraspinous fossa?41
5174645770triceps brachiiWhat muscle inserts on the olecranon process?42

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