muscles of elbow/ RU joint

Question 1

origin and insertion of brachialis

Answer 1

O: distal 1/2 of ant surface of humerus

I: coronoid process of ulna

Question 1

flexion

Answer 1

action of brachialis

Question 1

pronation

Answer 1

action of pronator quadratus

Question 2

action of all head of tricep brachii

Answer 2

extension

Question 4

origin and insertion of bicep brachii short head

Answer 4

O: coracoid process

I: radial tuberosity

Question 5

origin and insertion of tricep brachii medial head

Answer 5

O: inf/post 2/3 of humerus

I: prox/post surface of olecranon process

Question 5

• flexion
• pronation

Answer 5

actions of pronator teres

Question 6

actions of both head of bicep brachii

Answer 6

-flexion -supination

Question 7

origin and insertion of tricep brachii lateral head

Answer 7

O: sup/lat/post half of humerus

I: prox/post surface of olecranon process

Question 8

origin and insertion of tricep brachii long head

Answer 8

O: inferior edge of glenoid fossa

I: prox/post surface of olecranon process

Question 8

action of supinator

Answer 8

supination

Question 10

origin and insertion of bicep brachii long head

Answer 10

O: superior edge of glenoid fossa

I: radial tuberosity

Question 12

action of pronator quadratus

Answer 12

pronation

Question 13

• flexion
• supination

Answer 13

actions of both head of bicep brachii

Question 14

• flexion
• pronate 90
• supinate 90

Answer 14

actions of brachioradialis

Question 15

origin and insertion of brachioradialis

Answer 15

O: sup side of lat epicondyle

I: styloid process of radius

Question 16

supination

Answer 16

action of supinator

Question 18

action of brachialis

Answer 18

flexion

Question 19

extension

Answer 19

action of all head of tricep brachii and anconeus

Question 20

action of anconeus

Answer 20

extension

Question 21

actions of pronator teres

Answer 21

-flexion -pronation

Question 22

actions of brachioradialis

Answer 22

-flexion -pronate 90 -supinate 90