Origins for Muscles of the Elbow and Forearm

Question 1

What is the origin of the brachialis muscle?

Answer 1

distal half of humerus, anterior surface

Question 2

What are the origins of the biceps brachii long head and short head muscles?

Answer 2

long head=supraglenoid tubercle of scapula

short head= coracoid process of scapula

Question 3

What is the origin of the brachioradialis muscle?

Answer 3

lateral supracondylar ridge on the humerus

Question 4

What are the origins of the triceps muscles? Long head, lateral head, medial head?

Answer 4

long head= infraglenoid tubercle of scapula
lateral head= inferior to greater tubercle on posterior humerus
medial head= posterior surface of humerus

Question 5

What is the origin of the anconeus muscle?

Answer 5

lateral epicondyle of humerus

Question 6

What is the origin of the pronator teres muscle?

Answer 6

medial epicondyle of humerus and coranoid process of ulna

Question 7

What is the origin of the pronator quadratus muscle?

Answer 7

distal 1/4 of the ulna

Question 8

What is the origin of the supinator muscle?

Answer 8

lateral epicondyle of the humerus and adjacent to the ulna