Where does extensor carpi radialis longus attach?
Where does extensor carpi radialis longus attach?
second metacarpal bone
The extensor carpi radialis longus is one of the five main muscles that control movements at the wrist. This muscle is quite long, starting on the lateral side of the humerus, and attaching to the base of the second metacarpal bone (metacarpal of the index finger).
What are the attachments of the extensor carpi radialis brevis?
Extensor carpi radialis brevis muscle
| Origin | Lateral epicondyle of humerus (common extensor tendon) |
|---|---|
| Insertion | Posterior aspect of base of metacarpal bone 3 |
| Action | Wrist joints: Hand extension, hand abduction (radial deviation) |
| Innervation | Radial nerve (C5- C6) |
What are the skeletal attachments of the flexor carpi radialis?
Flexor carpi radialis muscle
| Origin | Medial epicondyle of humerus |
|---|---|
| Insertion | Bases of metacarpal bones 2-3 |
| Action | Wrist joint: Wrist flexion, wrist abduction |
| Innervation | Median nerve (C6, C7) |
| Blood supply | Anterior/posterior recurrent ulnar artery, radial artery |
Where does flexor pollicis longus attach?
thumb
Flexor pollicis longus muscle
| Origin | Anterior surface of radius and interosseous membrane |
|---|---|
| Insertion | Palmar surface of distal phalanx of thumb |
| Action | Metacarpophalangeal and interphalangeal joint 1; Thumb flexion |
| Innervation | Median nerve (anterior interosseous nerve C7, C8) |
Where does extensor digitorum insertion?
Extensor digitorum muscle
| Origin | Lateral epicondyle of humerus (common extensor tendon) |
|---|---|
| Insertion | Extensor expansions of digits 2-5 |
| Action | Metacarpophalangeal / Interphalangeal joints 2-5: Finger extension |
| Innervation | Posterior interosseous nerve (C7, C8) |
Which of the following is the insertion of the extensor carpi ulnaris muscle?
Extensor carpi ulnaris is a fusiform muscle in the posterior forearm. It spans between the elbow and base of the little finger….Extensor carpi ulnaris muscle.
| Origin | Lateral epicondyle of humerus, posterior border of ulna |
|---|---|
| Insertion | Base of metacarpal bone 5 |
| Action | Wrist joint: Hand extension and adduction |
What nerve innervates the extensor digitorum longus?
Deep Fibular (Peroneal) Nerve It passes obliquely forward, deep to the extensor digitorum longus, to the front of the interosseous membrane. Here, the deep fibular nerve gives muscular branches to the tibialis anterior, extensor hallucis longus, extensor digitorum longus, and fibularis tertius.
What is function of flexor carpi radialis?
When talking of innervation of this muscle, it is innervated by the median nerves. Blood is supplied to the Flexor Carpi Radialis muscle by the radial artery. The function of Flexor Carpi Radialis muscle is to promote flexion of wrist and playing an important role in abduction of the wrists and the hands.
What does flexor carpi mean?
The flexor carpi ulnaris muscle (or FCU) is a muscle of the human forearm that acts to flex and adduct (medial deviation) the hand.
What is the flexor carpi radialis?
In anatomy, flexor carpi radialis is a muscle of the human forearm that acts to flex and (radial) abduct the hand. The Latin carpus means wrist; hence flexor carpi is a flexor of the wrist.
Is a deltoid an extensor?
Post deltoid, lats +. Major extensors include the posterior deltoid, latissimus dorsi , teres major other muscles with extension moments include the subscapularis, long head of the triceps, infraspinatus, teres minor. The sternal head of the pectoralis major can have an extensor moment when the arm is in a forward flexed, internally rotated position.
