Extensor Digiti Minimi Muscle

**Semantic type:** Body Part, Organ, or Organ Component

**Definition:** A muscle in the posterior forearm that originates from the lateral epicondyle of the humerus and attaches to the extensor expansion of the fifth digit; it functions to extend the fifth digit at the metacarpophalangeal joint.

**Synonyms:** - EXTENSOR DIGITI MINIMI MUSCLE