Week 9 part 1 - Elbow joint

Question 1

Elbow joint allows for…

Answer 1

flexion and extension

Question 2

Radioulnar joint allows for…

Answer 2

pronation and supination

Question 3

muscles of the forearm

Answer 3

brachialis
biceps brachii
brachioradialis
triceps brachii
Anconeus
Pronator teres
Pronator quadratus
Supinator

Question 4

Brachialis OIA

Answer 4

Origin: Humerus (halfway down the shaft)
Insertion: ulna - coronoid process, ulnar tuberosity
Action: Elbow flexion

Question 5

Biceps brachii OIA

Answer 5

O: scapula - long head: supraglenoid tubercle
Short head: coracoid process
I: Radius - radial tuberosity
A: Elbow flexion, supination

Question 6

Brachioradialis OIA

Answer 6

O: distal humerus - lateral supracondylar ridge
I: distal radius - styloid process
A: Elbow flexion - can help pronate & supinate to neutral position

Question 7

Triceps brachii OIA

Answer 7

O: Scapula - long head: Infraglenoid tubercle
Humerus - Medial and lateral heads
I: Ulna - olecranon process
A: Elbow extension

Question 8

Pronator teres OIA

Answer 8

O: Medial epicondyle
I: Mid radius
A: Pronates forearm - assists elbow flexion

Question 9

Quadratus OIA

Answer 9

O: Distal ulna
I: Distal radius
A: Pronates forearm