Movements of the Elbow Joint - The Muscles

Question 1

Which movements are permitted by the Elbow Joint?

Answer 1

Flexion and Extension

Question 2

Which muscles permit flexion of the elbow joint?

Answer 2

Biceps Brachii
Brachialis
Brachioradialis

Question 3

Name the innervations to the flexors of the elbow joint

Answer 3

Biceps Brachii - musculocutaneous nerve
Brachialis - musculocutaneous nerve and radial nerve
Brachioradialis - radial nerve

Question 4

Name the origin and insertion of biceps brachii

Answer 4

Origin - long head - supraglenoid tubercle of scapula, short head - coracoid process of scapula
Insertion - both heads - radial tuberosity + fascia of forearm via bicipital aponeurosis

Question 5

Name the origin and insertion of Brachialis

Answer 5

Origin - medial and lateral surfaces of the humeral shaft

Insertion - ulna tuberosity, distal to the elbow joint

Question 6

Name the origin and insertion of Brachioradialis

Answer 6

Origin - lateral supracondylar ridge of the humerus

Insertion - lateral surface of the distal end of the radius

Question 7

Which muscles permit extension at the elbow joint?

Answer 7

Triceps brachii

Anconeus

Question 8

Name the innervations of the extensors of the elbow joint

Answer 8

Triceps brachii - radial nerve

Anconeus - radial nerve

Question 9

Name the origin and insertions of Triceps Brachii

Answer 9

Origin - long head - infraglenoid tubercle, lateral head - humerus, superior to the radial groove, medial head - humerus, inferior to the radial groove
Insertion - the heads converge to one tendon and insert into the olecranon of the ulna

Question 10

Name the origin and insertion of Anconeus

Answer 10

Origin - posterior surface of lateral epicondyle of humerus

Insertion- lateral surface of olecranon, and posterior surface of superior part of ulna

Question 11

Where does pronation and supination occur?

Answer 11

Don’t occur at the elbow, but occur at the radioulnar joints which are nearby