Anatomy of the Upper Limb Flashcards
What type of joints are sternoclavicular, glenohumeral and acromioclavicular?
Acromioclavicular - plane
Glenohumeral - ball and socket
Sternoclavicular - saddle
What type of joints are proximal/distal radioulnar and radiocarpal?
Proximal/distal radioulnar - pivot
Radiocarpal - ellipsoid
During pronation, the radius moves over/under the ulna
Over
What type of joint are MCP joints?
Condyloid
What type of joint is the 1st CMC joint?
Saddle
Identify the muscle and its nervous innervation
Identify the muscles and their nervous innervation
Identify the muscle and its nervous innervation
Identify the muscle and its nervous innervation
What are the four rotator cuff muscles?
Supraspinatus
Infraspinatus
Subscapularis
Teres minor
Identify the muscles of the rotator cuff
What muscles are found in the anterior arm?
Biceps brachii
Brachialis
Coracobrachialis
Identify the muscles of the anterior arm
What nerve innervates the anterior arm muscles?
Musculocutaneous nerve
What actions do the anterior arm enable?
Flexion of arm and forearm
The biceps brachii also enables which action?
Forearm supination
Which muscle is found in the posterior arm?
Triceps brachii
What nerve innervates the posterior arm?
Radial nerve
What nerve innervates most of the anterior forearm?
Median nerve
What actions does the posterior arm enable?
Extension of arm and forearm
Which muscles in the anterior forearm are innervated by the ulnar nerve and NOT median?
Flexor carpi ulnaris
Medial half of flexor digitorum profundus
What actions does the anterior forearm enable?
Wrist and digit flexion
Pronation, adduction and abduction of the wrist
What nerve innervates the posterior compartment of the forearm?
Radial nerve
What actions do the posterior forearm muscles enable?
Extension of wrist and digits
Supination, adduction and abduction of wrist
The thenar eminence is made up of which muscles?
Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis
The hypothenar eminence is made up of which muscles?
Abductor digiti minimi
Flexor digiti minimi brevis
Opponens digit minimi
The hypothenar/thenar eminence is affected by carpal tunnel syndrome
Thenar eminence
What are the lumbricals attached to?
Tendons of flexor digitorum profundus
The dorsal interossei enable adduction/abduction of digits and the palmar interossei enable adduction/abduction of digits
Dorsal = abduction
Palmar = adduction
The brachial plexus originates at what spinal roots?
C5-T1
Cords of the brachial plexus travel around which artery?
Brachial artery
The musculocutaneous nerve is a branch of which cord of the brachial plexus?
Lateral cord
The posterior cord branches to give which nerves?
Axillary and radial
The ulnar nerve is a branch of which cord?
Medial cord
The median nerve is formed from branches of which cords?
Lateral and medial
What is contained within the carpal tunnel?
Flexor digitorum superficialis (four tendons)
Flexor digitorum profundus (four tendons)
Flexor pollicis longus (one tendon)
Median nerve
Median nerve compression causes numbness in which digits?
Digits 1-3 and lateral half of digit 4
In the superficial palmar arch, the radial/ulnar artery is dominant
UInar artery
