Origins/Insertions
What is the common flexor origin?
Medial epicondyle
What nerve goes through the carpal tunnel?
Median nerve
Elbow flexion
Where is the infraspinatus?
Back of the scapula below the spine
What is the origin of the coracobrachialis?
Coracoid process
What muscles does the dorsal scapular nerve innervate?
Rhomboids (major and minor) and levator scapulae
What is the action of the serratus anterior?
Scapular protraction
Very end of spinal cord (anchors spinal cord to coccyx)
Where is the hamate?
Distal row, pinky side
What is the origin of the extensor carpi radialis brevis?
Lateral epicondyle
Which nerve innervates the supraspinatus and infraspinatus muscles?
Suprascapular nerve
What is the action of the anterior deltoid?
Shoulder flexion and internal rotation
Where is the annular ligament/what does it surround?
Radial head
Where is the greater tubercle?
Lateral proximal humerus
What is the insertion of the biceps brachii?
Radial tuberosity
Injury to the radial nerve causes weakness of what?
Extension (specifically wrist)
What are the actions of the latissimus dorsi (3)
Adduction, internal rotation, and extension
Where is the transverse carpal ligament?
Forms the roof of the carpal tunnel between the hook of the hamate and the trapezium
Where is the olecranon fossa?
Posterior distal humerus
Where does the latissimus dorsi insert?
Inferior angle of scapula
What is the sensory distribution of the median nerve?
Palm, digits 1-3 (thumb-middle), and half of 4th digit (ring finger)
What is the action of the extensor pollicis longus?
Thumb extension (at the IP joint)
Where is the adductor pollicis?
In the webbing between thumb and pointer finger
Where is the dura mater?
Outer, durable layer of spinal cord