Extensor Carpi Radialis Longus Muscle
Origin: Proximally to the lateral supracondylar ridge of humerus
Insertion: Distally, to the back base of the second metacarpal bone
Actions: Extension of the wrist
Innervation: Radial nerve (C5, C6)
Blood Supply: Radial recurrent artery from the radial artery
Primary Actions of the Extensor Carpi Radialis Longus
1. Extension of the wrist
Agonists:
- Extensor Carpi Radialis Brevis
- Extensor Carpi Ulnaris
Antagonists:
- Flexor Carpi Radialis
- Palmaris Longus
- Flexor Carpi Ulnaris
2. Radial Deviation of the wrist
Agonists:
- Extensor Carpi Radialis Brevis
- Flexor Carpi Radialis
Antagonists:
- Flexor Carpi Ulnaris
- Extensor Carpi Ulnaris
Extensor pollicis brevis and abductor pollicis longus assist with radial deviation of the wrist
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For pain and symptom information see: Extensor Carpi Radialis Longus Pain
An excellent book for those beginning the study of anatomy. Coloring helps memory retention.
For intermediary anatomy students learning skeletal and muscle structure.
For beginning and intermediary anatomy . Muscle overlays on the human body. Excellent visuals!