Extremities Part 5

Question 1

What muscles origin is spines of sacral, lumbar, and lower thoracic vertebrae, insertion intertubercular groove of the humerus, action extends adducts and rotates humerus medially?

Answer 1

Latissimus dorsi

Question 2

What muscles origin is clavicle, acromion process spine of the scapula, insertion deltoid tuberosity of the humerus, action anterior part: flexes and medially rotates arm middle part: adducts arm posterior: extends and laterally rotates arm?

Answer 2

Deltoid

Question 3

What muscles origin is inferior angle and lateral border of scapula, insertion crest of lesser tubercle of the humerus, action medially rotates and adducts arm?

Answer 3

Teres major

Question 4

What muscles origin is subscapular fossa, insertion lesser tubercle of humerus, action extends humerus adducts and rotates arm medially?

Answer 4

Subscapularis

Question 5

What muscles origin is supraspinous fossa of the scapula, insertion greater tubercle of the humerus, action abducts and laterally rotates humerus?

Answer 5

Supraspinatus

Question 6

What muscles origin is infraspinous fossa of the scapula, insertion greater tubercle of the humerus, action rotates arm laterally?

Answer 6

Infraspinatus

Question 7

What muscles origin is superior part of the axillary border of scapula, insertion greater tubercle of humerus, action rotates arm laterally?

Answer 7

Teres minor

Question 8

What muscles create the rotator cuff?

Answer 8

•Subscapularis
•Supraspinatus
•Infraspinatus
•Teres minor

Question 9

What separates the limbs into compartments?

Answer 9

Deep fascia

Question 10

What two compartments occur in the brachium?

Answer 10

•Anterior (flexor) compartment
•Posterior (extensor) compartment

Question 11

What muscles origin is coracoid process of the scapula, insertion middle third of medial surface of humerus, action flexes and adducts arm at shoulder joint?

Answer 11

Coracobrachialis

Question 12

What muscles origin short head: coracoid process of scapula long head: supraglenoid tubercle of scapula, insertion radial tuberosity, action flexes and supinates forearm?

Answer 12

Biceps brachii

Question 13

What muscles origin is distal half of anterior shaft of the humerus, insertion Coronoid process of ulna , action flexes forearm?

Answer 13

Brachialis

Question 14

What muscles origin is proximal two thirds of lateral supracondylar ridge of humerus, insertion lateral surface of distal end of radius, action flexes forearm?

Answer 14

Brachioradialis

Question 15

What muscles origin is 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?

Answer 15

Triceps brachii

Question 16

What muscles origin is medial epicondyle of the humerus and coronoid process of ulna, insertion middle of lateral surface of the radius , action pronates forearm?

Answer 16

Pronator teres

Question 17

What muscles origin is distal fourth of anterior surface of ulna, insertion distal fourth of anterior surface of radius, action pronates hand?

Answer 17

Pronator quadratus

Question 18

What muscles origin is lateral epicondyle of the humerus and crest of the ulna, insertion lateral surface of the proximal third of radius, action supinates forearm?

Answer 18

Supinator

Question 19

What muscles origin is medial epicondyle of the humerus anterior proximal ulna and radius interosseous membrane, insertion carpals metacarpals and phalanges, action flexes wrist and digits?

Answer 19

Flexors

Question 20

What muscles origin is lateral epicondyle of the humerus posterior surfaces of the radius and ulna interosseous membrane, insertion carpals metacarpals and phalanges, action extend wrist and digits?

Answer 20

Extensors

Question 21

What is another name for the flexor retinaculum of the wrist?

Answer 21

Carpal ligament

Question 22

What is another name for the flexor retinaculum of the wrist?

Answer 22

Carpal ligament

Question 23

The flexor retinaculum of the wrist and the arch of the carpals form what structure?

Answer 23

Carpal tunnel

Question 24

What group of muscles forms the thick fleshy mass at the base of the thumb and work to abduct flex or oppose the thumb?

Answer 24

Thenar group

Question 25

What 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?

Answer 25

Hypothenar group

Question 26

What muscles origin is tendons of a flexor which sends a tendon to the distal phlanx of digits 2-5, insertion lateral sides of extensor expansions of digits 2-5, action flexes digits at metacarpophalangeal joints and extend interphalangeal joints?

Answer 26

Lumbrical muscles

Question 27

What muscles origin is adjacent sides of two metacarpal bones, insertion extensor expansions and bases of proximal phalanges of digits 2-4, action abducts digits 2-4?

Answer 27

Dorsal interossei

Question 28

What muscles origin is palmar surfaces of metacarpals 2,3,4,and5, insertion extensor expansions of digits and bases of proximal phalanges of digits 2,4,and5, action adduct digits 2,4,5?

Answer 28

Palmar interossei