Flexor Carpi Ulnaris

Diagram of posterior muscles.

The flexor carpi ulnaris muscles are located on the palmar surface of the forearm. They work with other 'wrist flexor' muscles to flex the wrist of the associated (right- or left-) arm.

In general a 'flexor' muscle is one that causes flexion, i.e. a movement that decreases the angle between articulating bones.

Origin, Insertion and Actions of the Flexor Carpi Ulnaris muscles:

Points of Origin: Humeral head: Ulnar head:
  • Upper part of the ulna bone
Points of Insertion:
  • Pisiform (carpal bone)
  • Hook of the hamate (carpal bone), via ligaments
  • Base of the 5th metacarpal (hand bone), via ligaments

The approximate locations of the flexor carpi ulnaris muscles are labelled on the diagram of human anterior muscles.

More about Muscles:

The following are some popular pages in the section about the human muscular system:

There are also more pages about the words used to describe muscles (terminology), the anatomy and physiology of muscles, muscular disorders and associated topics. See also books about sports medicine.

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