Unit Two Antebrachial Flexors Flashcards
Role of forearm movement
Assist the shoulder in the application of force and in controlling the placement of the hand in space
To allow the free manipulation of the hand the bulk of the forearm musculature is located where
Proximally with long tendonous insertions on the distal bony structures
Forearm also includes what of upper arm
Distal humerus
What are located in the anterior compartment of the forearm
Flexors and pronator
Most of the flexors and pronators in the forearm are supplied by what nerve
Median nerve
What is the one exception of the forearm muscle that is a flexor but located in the posterior compartment and supplied by radial nerve
Brachioradialis
What muscles are located in the posterior compartment of the forearm
Extensors and supinators
Extensors and supinators of forearms are mostly innervated by what nerve
Radial nerve
What fascial layer divides the forearm into functional units
Antebrachial fascia
What are the antebrachial fascia examples
Palmar aponeurosis, palmar carpal ligament, and flexor retinaculum
Aka of flexor retinaculum
Transverse carpal ligament
The tendons of most flexors are held in place by what over anterior wrist
Palmar carpal ligament and flexor retinaculum
The flexors can be categorized into what three groups
Superficial, intermediate and deep
What are the superficial layer flexor muscles
Pronator teres, flexor carpi radialis, palmaris longus, flexor carpi ulnaris, brachioradialis
All the superficial layer of flexors attached proximally by what and where
Common flexor tendon to the medial epicondyle
What muscle is in the intermediate layer of the flexors
Flexor digitorum superficialis
What muscles are in the deep group of the flexor muscles
Flexor digitorum profundus, flexor pollicis longus, pronator quadratus
What layers of the flexor muscles cross the elbow joint
Superficial and intermediate
What muscle is absent in 10% of people
Palmaris longus
What flexor muscle in animals operates the claws
Palmaris longus
What nerve runs between the two heads of the flexor carpi ulnaris
Ulnar nerve
In cubital tunnel syndrome what nerve is affected
Ulnar nerve
What is the brachioradialis the exceptional muscle
Located in posterior compartment, innervated by radial nerve, flexor of forearm
The long flexors of the digits also flex what
Metacarpophalangeal and wrist joints
FDP slowly flexes what
Fingers
FDS is recruited with FDP when what is needed
Speed and flexion against resistance are needed
What causes decrease in power generated by the FDP and FDS
Wrist flexion
What increases grip strength
Wrist in a neutral position
The FDS flexes what phalanges
Middle
FDP flexes what phalanges
Distal
What is the prime pronator assisted by the pronator teres
Pronator quadratus
What pronator plays a role in holding the radius and ulna together
Pronator quadratus
