Anterior Arm Flashcards
What are the muscles of the anterior arm
Biceps brachii
Brachialis
Coracobrachialis
What movement do the muscles of the anterior arm contribute
Flexion
What are the muscles of the anterior arm innervated by
Musculocutaneous nerve
Where does the biceps brachii lie
Most superficially in the anterior arm
How many muscles bellies does the biceps brachii have
2
What are the name of the muscle bellies of the biceps brachii
Long head
Short head
Proximally where does the long and short head of the biceps brachii attach
Scapula
Where does the long head of the biceps brachii attach
Supraglenoid tubercle
Where does the short head of the biceps brachii attach
Coracoid process
What do the two muscles of the biceps brachii converge to form
Via the common tendon onto the radial tuberosity of the radius
What do the two muscles of the biceps brachii converge to form
Via the common tendon onto the radial tuberosity of the radius
What movement can the biceps brachii allow
Flexor at the elbow joint
Flexion of the shoulder joint
Powerful supinator of the forearm when the elbow is flexed
Where does the brachialis lie
Deep to the biceps
Where is the brachialis attached
Proximally - Anterior aspect of the lower half of the shaft of the humerus
Distally - Crosses the elbow joint to insert upon the ulna tuberosity
What movement does the brachialis allow
Powerful flexor of the elbow joint
Does not act on the shoulder
