Anterior muscles of the Forearm Flashcards
How many layers are the anterior muscles of the forearm arranged in
Superficial, middle and deep
What muscles are located in the superficial layer of the anterior forearm
(Lateral to medial)
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
Where are superficial muscles of the anterior forearm attached proximally
Medial epicondyle of the humerus
What does the pronator teres do
Pronator of the proximal radioulnar joint
What does the flexor carpi radialis (FCR)
Flexes and abducts the wrist
Where does the flexor carpi radialis insert
Radial side of the wrist
What is the shape of the palmaris longus
Small muscle belly but long and thin
Where does the palmaris longus insert
Into fascia of the palm of the hand
What does the flexor carpi ulnaris (FCU) do
Flexes and adducts the wrist
Where does the flexor carpi ulnaris insert
Ulna side of the wrist
What is the flexor carpi ulnaris innervated by
Ulnar nerve
What are the two general rules of the anterior muscles of the forearm
Most are flexors of the wrist, fingers or thumb
Most are innervated by the median nerve
What muscles are in the middle layer of the anterior muscles of the forearm
Flexor digitorum superficalis (FDS)
How many tendons does the flexor digitorum superficalis give rise to
4
What are the muscles of the deep layer of the anterior compartment of the forearm
Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus
What is the order of the number of muscles in the layers of the anterior compartment of the arm
4
1
3
What is the role of the flexor digitorum profundus
Flexor of the digits
What does the flexor digitorum profundus lie deep to
Flexor digitorum superficialis
How many tendons does the flexor digitorum profundus give rise to
4
In the anterior forearm the lateral half of the muscle gives rise to tendons which travel to which fingers
Index and middle fingers
Medial half of the muscle gives tendons which travel to which fingers
Ring and little fingers
What is the index and middle finger innervated by
Median nerve
What is the ring and little finger innervated by
Ulnar nerve
What is the role of the flexor pollicis longus
Flexes the thumb
What is the role of the pronator quadratus
Pronates the distal radioulnar joint
Where is the pronator quadratus located
Deepest forearm muscle
Square-shaped
Lies over the distal end of the radius and ulnar
What muscles of the anterior forearm are NOT flexors
Pronator teres and pronator quadratus
What muscles of the anterior forearm are NOT innervated by the median nerve
FCU and medial half of FDP
