Elbow/Upperarm O/I

Question 1

Supinator

Answer 1

Origin:
(Humeral head) inferior aspect lateral epicondylitis of 
  humerus
Radial collateral ligament
Angular ligament 
(Ulnar head) supinator crest 
  Fossa of ulna 

Insertion: Posterior, lateral and anterior aspects radius

Question 2

Biceps brachii

Answer 2

Origin: (Long head) supraglenoid tubercle, through 
  shoulder and intertubercula 
  groove
(Short head) apex coracoid 
  process scapula

Insertion: 2 bellies fuse and 
  common tendon inserts 
  posterior part of radial 
  tuberosity 
Bicipital aponeurosis attaches 
  to deep fascia of forearm

Question 3

Brachialis

Answer 3

Origin: Distal 2/3s anterior surface humerus and adjacent septa

Insertion: Inferior coracoid process and tuberosity of ulna

Question 4

Brachioradialis

Answer 4

Origin: Upper 2/3s anterior lateral supracondylar ridge of humerus and adjecent septa

Insertion: Lateral surface radius

Question 5

Pronator teres

Answer 5

Origin: Common flexor origin; medial epicondyle of humerus
Pronator ridge of ulna

Insertion: Middle lateral surface radius

Question 6

Pronator quadratus

Answer 6

OriginL Lower 1/4 anterior surface ulna

Insertion: Lower 1/4 anterior surface radius

Question 7

Triceps brachii

Answer 7

Origin:
(Long head) infraglenoid tubercle scapula and
adjacent glenoid labrum
(Lateral head) posterior surface humerus,
upper and lateral to spiral groove
(Medial head) posterior surface humerus, below
and medial to spiral groove and adjacent
septa

Insertion: Posterior surface olecranon of ulna and adjacent deep fascia of forearm

Question 8

Anconeus

Answer 8

Origin: Posterior surface lateral epicondyle of humerus

Insertion: Lateral surface olecranon
Posterior surface ulna