Action, Innervations & Attachments - Upper Arms

Question 1

Biceps Brachii Long Head

Answer 1

Proximal: Supraglenoid tubercle scapula (tendon along the bicipital grove)

Distal: Tuberosity of the radius

Innervation: Musculocutaneous nerve

Question 2

Biceps Brachii Short Head

Answer 2

Proximal: (Apex of) Coracoid process

Distal: (Radial) tuberosity of the radius

Innervation: Musculocutaneous nerve

Question 3

Brachialis

Answer 3

Proximal: Distal half of anterior aspect of shaft of humerus

Distal: Coronoid process of ulnar & ulnar tuberosity

Innervation: Musculocutaneous nerve

Question 4

Brachioradialis

Answer 4

Proximal: Lateral supracondylar ridge of humerus

Distal: Styloid process of radius

Innervation: Radial nerve

Question 5

Pronator Teres

Answer 5

Proximal:
Humeral Head: Medial supracondylar ridge & medial epicondyle of humerus

Ulna head: Coronoid process

Distal: Middle of lateral side of radius

Innervation: Median Nerve

Question 6

Triceps Brachii Lateral Head

Answer 6

Proximal: Posterior proximal humerus, above radial groove

Distal: Olecranon process

Innervation: Radial nerve

Question 7

Triceps Brachii Long head

Answer 7

Proximal: Infraglenoid tubercle of scapula

Distal: Olecranon process

Innervation: Radial nerve

Question 8

Triceps Brachii Medial head

Answer 8

Proximal: Posterior distal humerus

Distal: Olecranon process

Innervation: Radial nerve

Question 9

Supinator

Answer 9

Proximal: Lateral epicondyle of humerus

Distal: Anterior & proximal surface of proximal radius

Innervation: Radial nerve