Arm Muscles and Cubital Fossa Flashcards
Actions of the biceps brachii?
Supination of the forearm
Flexion of the arm at elbow and shoulder
Attachments of the biceps brachii?
Long head: supraglenoid tubercle of scapula
Short head: coracoid process of scapula
Radial tuberosity
Attachments of the brachialis?
Medial and lateral surfaces of humeral shaft
Tuberosity of ulna
Action of the brachialis?
Flexion of the elbow
Attachments of the coracobrachialis?
Coracoid process to medial side of humeral shaft
Movements of the coracobrachialis?
Flexion of the arm at the shoulder
What is the innervation of the muscles in the anterior compartment? Spinal root values?
Musculocutaneous
C5 and C6
Attachments of the three heads of the triceps brachii?
Long head: infraglenoid tubercle
Medial head: humerus, inferior to radial groove
Lateral head: humerus, superior to radial groove
Innervation of the triceps brachii? Spinal root values?
Radial nerve
C5-T1
Whay produces the popeye sign?
Rupture of the biceps tendon, most commonly the long head.
Get weakness in the upper limb
Contents of cubital fossa? From lateral to medial
Radial nerve
Biceps tendon
Brachial artery
Median nerve
What is the floor of the cubital fossa formed by?
Brachialis and supinator muscle
What forms the lateral border of the cubital fossa?
Brachioradialis
What forms the medial border of the CF?
Pronator teres
What forms the roof of the CF?
Brachial and anti brachial fascia reinforce by the bicipital aponeurosis
