Elbow, Wrist and Hand - Muscles

Question 1

state the action(s) of the - brachialis (1)

Answer 1

flexes the elbow in all positions of supination and pronation

Question 2

state the action(s) of the - biceps brachii (4)

Answer 2

1. supinates forearm
2. flexes elbow
3. flexes shoulder
4. stabilises the glenohumeral joint both anteriorly and superiorly

Question 3

state the action(s) of the - brachioradialis (1)

Answer 3

flexes elbow when arm is in a neutral position

Question 4

state the action(s) of the - pronator teres (2)

Answer 4

1. pronates the forearm

2. weak elbow flexor

Question 5

state the action(s) of the - triceps brachii (3)

Answer 5

1. elbow extension
2. shoulder extension
3. stabilises the glenohumeral joint both posteriorly and inferiorly

Question 6

state the action(s) of the - anconeus (1)

Answer 6

assists elbow extension

Question 7

state the action(s) of the - pronator quadratus

Answer 7

forearm pronation

Question 8

state the action(s) of the - supinator

Answer 8

forearm supination

Question 9

state the origin(s) of the - supinator

Answer 9

lateral epicondyle of humorous; supinator crest of ulna; radial collateral and annular ligament

Question 10

state the origin(s) of the - pronator quadratus

Answer 10

anterior surface of the distal surface of the ulna

Question 11

state the origin(s) of the - anconeus

Answer 11

lateral epicondyle of the humorous

Question 12

state the origin(s) of the - triceps brachii LoH

Answer 12

infraglenoid tubercle of the scapula

Question 13

state the origin(s) of the - triceps brachii LaH

Answer 13

upper 1/2 posterior surface of the shaft of the humorous

Question 14

state the origin(s) of the - triceps brachii MH

Answer 14

lower 1/2 posterior surface of the shaft of the humorous

Question 15

state the origin(s) of the - pronator teres

Answer 15

common flexor tendon; coracoid process of the ulna

Question 16

state the origin(s) of the - brachioradialis

Answer 16

lateral supracondylar ridge of the humorous

Question 17

state the origin(s) of the - biceps brachii LH

Answer 17

supraglenoid tubercle of the scapula

Question 18

state the origin(s) of the - biceps brachii SH

Answer 18

coracoid process of the scapula

Question 19

state the origin(s) of the - brachialis

Answer 19

lower shaft of the humorous; anterior aspect

Question 20

state the insertion(s) of the - brachialis

Answer 20

coracoid process; tuberosity of ulna

Question 21

state the insertion(s) of the - biceps brachii

Answer 21

via biceps brachii tendon onto the radial tuberosity

Question 22

state the insertion(s) of the - brachioradialis

Answer 22

styloid process of the ulna

Question 23

state the insertion(s) of the - pronator teres

Answer 23

pronator tuberosity (on radius)

Question 24

state the insertion(s) of the - triceps brachii

Answer 24

olecranon of the ulna

Question 25

state the insertion(s) of the - anconeus

Answer 25

shaft and olecranon of the ulna

Question 26

state the insertion(s) of the - pronator quadratus

Answer 26

anterior surface of the lateral border of the shaft of the radius

Question 27

state the insertion(s) of the - supinator

Answer 27

lateral surface of the upper 1/3 of the radius