Elbow

Question 1

Origin of the Long and Short Head of the Biceps Brachii

Answer 1

Long head: supraglenoid tubercle of the scapula

Short head: coracoid process

Question 2

Insertion of the Biceps Brachii

Answer 2

Radial tuberosity on the radius, aponeurosis to deep fascia of common flexor tendon

Question 3

Action of the Biceps Brachii

Answer 3

Flex arm at GH joint
Flexion at Elbow joint and
supination at RU joints

Question 4

Innervation of the Biceps Brachii

Answer 4

Musculocutaneous n

Question 5

Origin of the Brachialis

Answer 5

distal 1⁄2 anterior shaft of humerus

Question 6

Insertion of the Brachialis

Answer 6

Ulnar tuberosity of the ulna and cornoid process

Question 7

Action of the Brachialis

Answer 7

Elbow flexion. Uninfluenced by the position of the forearm

Question 8

Innervation of the Brachialis

Answer 8

Musculocutaneous n

Question 9

Origin of the Brachioradialis

Answer 9

Lateral supracondylar ridge

Question 10

Insertion of the Brachioradialis

Answer 10

lateral aspect of radial styloid process

Question 11

Action of the Brachioradialis

Answer 11

flexion of the elbow joint, Most effective in mid range of pron/sup;
assists with pronation and supination moving to neutral

Question 12

Innervation of the Brachioradialis

Answer 12

Radial nerve

Question 13

Origin of the Pronator Teres

Answer 13

Two heads, medial epicondyle of humerus and medial supracondylar ridge; medial coronoid process

Question 14

Insertion of the Pronator Teres

Answer 14

Middle 1/3 of lateral radius

Question 15

Action of the Pronator Teres

Answer 15

Pronation at the radioulnar joints
assists with flexion
Weak flexor contributing when elbow is pronated

Question 16

Innervation of the Pronator Teres

Answer 16

Median nerve

Question 17

Origin of the Triceps Brachii (long lateral and medial)

Answer 17

Long head: infraglenoid tubercle
Lateral head: proximal 1/3 of posterior humerus
Medial head: distal 2/3 of posterior humerus

Question 18

Insertion of the Triceps Brachii

Answer 18

olecranon process

Question 19

Action of the triceps brachii

Answer 19

Long Head-GH joint extension

All heads-extend forearm at the elbow

Question 20

Innervation of the triceps brachii

Answer 20

radial nerve

Question 21

Origin of Pronator Quadratus

Answer 21

Distal fourth of anterior surface of ulna

Question 22

Insertion of Pronator Quadratus

Answer 22

Distal fourth of anterior surface of radius

Question 23

Action of the pronator quadratus

Answer 23

pronation

Question 24

innervation of the pronator quadratus

Answer 24

median nerve

Question 25

Origin of the supinator

Answer 25

Lateral epicondyle of humerus, Supinator fossa and crest of ulna

Question 26

Insertion of the supinator

Answer 26

Proximal third of lateral, posterior and anterior surfaces of the radius bone

Question 27

Action of the supinator

Answer 27

supination

Question 28

Innervation of the supinator

Answer 28

radial nerve