Pectoral Girdle & Rotator Cuff
This muscle originates from the supraspinous fossa and is responsible for initiating arm abduction.
What is the supraspinatus?
This nerve, originating from C5-C6, innervates the deltoid and teres minor muscles.
What is the axillary nerve?
These two bones form the forearm.
What are the radius and ulna?
This muscle is the primary flexor of the forearm.
What is the brachialis?
This artery is the main blood supply to the upper limb and is a continuation of the subclavian artery.
What is the axillary artery?
This rotator cuff muscle is the primary lateral rotator of the arm.
What is the infraspinatus?
This large nerve arises from the posterior cord and supplies all the extensor muscles of the arm and forearm.
What is the radial nerve?
The primary articulation site of the humerus and radius occurs at this structure.
What is the capitulum?
This muscle of the anterior forearm is an exception to the rule, as it is innervated by the ulnar nerve instead of the median nerve.
What is the flexor carpi ulnaris?
This major branch of the brachial artery supplies the deep structures of the arm.
What is the profunda brachii artery?
This large, triangular muscle spans from the occipital bone and thoracic vertebrae to the scapula and clavicle, playing a key role in scapular movement.
What is the trapezius?
This nerve, running behind the medial epicondyle, is commonly injured when hitting the 'funny bone'.
What is the ulnar nerve?
The anatomical snuffbox is formed by tendons of these muscles and lies superficial to this carpal bone.
What are the abductor pollicis longus, extensor pollicis brevis, and the scaphoid bone?
This muscle, innervated by the musculocutaneous nerve, both flexes and supinates the forearm.
What is the biceps brachii?
The vertebral column consists of this many cervical vertebrae.
What is seven? (C1-C7)
This muscle inserts onto the lesser tubercle of the humerus and is responsible for medial rotation of the arm.
What is the subscapularis?
Damage to this nerve results in wrist drop, due to the inability to extend the wrist and fingers.
What is the radial nerve?
This crescent-shaped fibrocartilage structure stabilizes the distal radioulnar joint.
What is the triangular fibrocartilage complex (TFCC)?
The deep branch of the radial nerve continues as this nerve, which innervates the posterior forearm muscles.
What is the posterior interosseous nerve?
The artery that runs through the transverse foramina of the cervical vertebrae is known as this.
What is the vertebral artery?
A patient has difficulty initiating arm abduction but can continue the movement past 15 degrees. Damage to this nerve is most likely the cause.
What is the suprascapular nerve?
The brachial plexus is formed by the ventral rami of these spinal nerves.
What are C5-T1?
This carpal bone is the most frequently fractured when falling on an outstretched hand.
What is the scaphoid?
This muscle assists in wrist flexion but is absent in approximately 15% of the population
What is the palmaris longus?
The cauda equina consists of nerve roots extending from this terminal part of the spinal cord.
What is the conus medullaris?