Upper Limb 3 Flashcards
(56 cards)
Which muscle adducts the wrist
Flexor Carpi ulnaris
Which muscle abducts the wrist
Flexor carpi radialis
Where is the common flexor origin
The medial epicondyle of the humerus
Which nerve innervates the superficial muscles of the anterior forearm
- the median supples the palmaris longus, flexor Carpi radialis and pronator teres
- the ulnar nerve supplies the flexor Carpi ulnaris
Which joint does the brachioradialis work
The elbow joint - flexion
Which nerve innervates the brachioradialis
Radial nerve
What is the distal attachment of the flexor digitorum superficialis
The shaft of the middle phalange on each finger which isn’t the thumb
What is the innervation of the flexor digitorum superficialis
Median nerve
Action of the flexor digitorum superficialis
Flexes the wrist and flexes the metacarpopharyngeal joints and proximal interpharyngeal joints of the 4 digits not including the thumb
Which muscles flex the wrist
- Flexor Carpi ulnaris
- flexor Carpi radialis
- palmaris longus (when present)
Action of flexor digitorum profundus
Flexion of distal interpharyngeal joints and flexion of wrist and flexion of metacarpopharyngeal joints
Innervation of the flexor digitorum profundus
The medial 2 fingers are innervated by ulnar and more lateral 2 fingers (middle and index) are innervated by median
Where does the flexor digitorum profundus originate and attach
Anterior surface of ulna and inserts on distal phalanges of 4 fingers
Action of the pronator quadratus
Pronation of forearm
Innervation of the pronator quadratus
Median nerve
Where does the flexor pollicis longus originate and then attach
Anterior surface of radius to the distal phalange of the thumb
Action of the flexor pollicis longus
Flexes interpharyngeal and metacarpopharyngeal joint of the thumb
Which muscle does the supinator directly oppose
Pronator teres
Where does the supinator originate
The lateral epicondyle and ulna and inserts into the radius
Innervation of the flexor pollicis longus
Median nerve
Which muscle is described as the long flexor of the thumb
Flexor pollicis longus
Which muscles does the median nerve not supply in the forearm
The flexor Carpi ulnaris and the medial half of the flexor digitorum profundus (ulnar nerve)
What structure does the median nerve pass below to enter the hand
The flexor retinaculum of the hand
Describe the path of the ulnar nerve
After passing posterior to the median epicondyle of the humerus, the ulnar nerve enters the forearm by passing between the heads of the flexor Carpi ulnaris muscle
