Arm Flexor


Latin: M. brachialis

  • To the overview arm musculature
  • To the musculature overview


The arm flexor (Musculus brachialis) lies as a 3 cm thick and 5 cm wide muscle directly under the two-headed arm muscle.


Origin: site of attachment of the deltoid muscle (Tuberositas deltoidea) Innervation: N. musculocutaneus


The arm flexor (Musculus brachialis) is a double feathered, strong flexor of the elbow joint. Due to the relatively short lever arm, the muscle is able to reach a rash of 20 cm on the hand even when shortened by only 1 cm.