Elbow and radioulnar joints

Question 1

What muscles are flexors of the elbow?

Answer 1

Brachialis
Biceps brachii
Coracobrachials
(BBC)

Question 2

What muscles are extensors of the elbow

Answer 2

Triceps brachii

anconeus

Question 3

What muscles control supination?

Answer 3

Supinator and biceps brachii

Question 4

Describe supinator

Answer 4

O: lateral epicondyle of humerus
A: proximal 1/3 of radius
I: deep branch of radial nerve C7, 8

Question 5

What is the origin of supinator?

Answer 5

lateral epicondyle of humerus

Question 6

What is the attachment of supinator?

Answer 6

proximal 1/3 of radius

Question 7

What is the innervation of supinator?

Answer 7

deep branch of radial nerve C7, 8

Question 8

Describe pronator teres

Answer 8

O: ulnar head - coronoid process of ulna
 humeral head - medial epicondyle of humerus
A: lateral surface of radius 
I: median nerve C6,7
Fn: pronation

Question 9

What is the origin of pronator teres?

Answer 9

ulnar head - coronoid process of ulna

humeral head - medial epicondyle of humerus

Question 10

What is the attachment of pronator teres?

Answer 10

lateral surface of radius

Question 11

What is the innervation of pronator teres?

Answer 11

median nerve C6,7

Question 12

What is the function of pronator teres?

Answer 12

pronation

Question 13

Describe anconeus

Answer 13

O: lateral epicondyle of humerus
A: lateral surface of olecranon + superior part of post surface of ulna
I: radial nerve C7, 8, T1
Fn: assists in extension of the elbow

Question 14

What is the origin of anconeus

Answer 14

lateral epicondyle of humerus

Question 15

What is the attachment of anconeus

Answer 15

lateral surface of olecranon + superior part of post surface of ulna

Question 16

What is the innervation of anconeus

Answer 16

radial nerve C7,8 T1

Question 17

What is the function of anconeus?

Answer 17

assist in extension of the elbow