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24 Cards in this Set

  • Front
  • Back
What are the three cutaneous nerves of the forearm?
Lateral antebrachial cutaneous
Medial antebrachial cutaneous
Posterior antebrachial cutaneous
The lateral antebrachial cutaneous nerve is a continuation of what nerve?
Musculocutaneous nerve
What does the lateral antebrachial cutaneous nerve supply?
Anterior and posterior aspects of radial side of forearm to the wrist
What does the Medial antebrachial cutaneous nerve come from?
a branch of the medial cord of brachial plexus
What does the Medial antebrachial cutaneous nerve supply?
It supplies the anterior and posterior aspects of the ulnar side of the forearm
The Posterior antebrachial cutaneous nerve arises from what?
branch of the radial nerve
What does the posterior antebrachial cutaneous nerve supply?
supplies the posterior surface of the forearm between distributions of the other two nerves
What is the shape of the antebrachial (deep) fascia?
A cylindrical sheath that encloses both flexor and extensor muscles
Where is the antebrachial fascia fused to?
Fused to the medial border of the ulna; sends a septum (interosseous membrane) to the readius, thereby forming anterior and posterior muscular compartments
In the distal anterior compartment this fascia does what?
splits into two layers, one anterior to three muscles (palmaris longus, flexor carpi ulnaris and flexor carpi radialis) and one between these muscles and the other more deeply located flexor muscles
What is the thick band of fibers that is sometimes cut in those who are suffering from carpal tunnel?
Flexsor retinaculum
What important structures are passing over or under the flexor retinaculum?
Palmaris longus tendon passes anteriorly;
Ulnar nerve and artery pass anterior;
Median nerves and tendons of long flexors of thumb and fingers pass posterior to it, through the carpel tunnel
Name the four superficial flexor muscles?
Pronator Teres
Flexor Carpi Radialis
Palmaris Longus
Flexor Carpi Ulnaris
Pronator Teres-origin, insertion, innervation and action
Origin-humeral head from medial humeral epicondyle; ulnar head from coronoid process of ulna
Insertion: lateral side of middle part of radius
Innervation: Median nerve passes between the two heads
Action: pronates hand
Flexor Carpi Radialis-origin, insertion and action
pg. 42
Name the intermediate flexor muscle layers?
Flexor Digitorum Superficialis
What are the deep flexor muscles?
Flexor Pollicis Longus;
Flexor Digitorum Profundus;
Pronator Quadratus
Name the two arteries to the Flexor muscles
Radial artery which gives a recurrent branch to the elbow region and muscular branches to flexor muscles
Ulnar artery which gives recurrent branches to elbow region and the common interosseous artery which has anterior and posterior branches. The anterior interosseous artery supplies the bulk of the flexor muscles
What are the superficial extensor muscles?
Brachioradialis
Extensor Carpi Radialis Longus
Extensor Carpi Radialis Brevis
Extensor Digitorum and Extensor digiti Minimi
Extensor Carpi Ulnaris
Name the deep extensor muscles
Supinator
Abductor pollicis Longus
Extensor Pollicis Brevis
Extensor Pollicis Longus
Extensor Indicis
What arteries supply the extensor muscles?
Posterior interosseous artery and its interosseous recurrent branch
Radial recurrent artery
Terminal (posterior) branch of the anterior interosseous artery pierces the distal part of the interosseous membrane to supply muscles in the distal part of the extensor compartment
The posterior interosseous artery is a branch from what?
the common interosseous artery
The radial recurrent artery supplies what?
The brachioradialis and the radial carpal extensors
What does the radial recurrent artery anastomoses with?
The radial collaterall branch of the Profunda brachii artery