Hand muscles (Mm. manus)Muscles of the hand are divided into thenar, hypothenar and intermediate groups lumbricales and interosei.
Thenar muscles abduct thumb, oppose thumb toward other fingers, flex thumb, adduct thumb. Hypothenar muscles abduct fifth finger, flex first phalang of the fifth finger. Intoresei muscle are three palmar and four dorsal. Muscles interosei dorsales abduct second and fourth finger from third finger,bend the first phalanges. Interosei palmares muscles approach the fingers towards the middle finger, bend the first phalang push second and third phalang. Lumbricales muscles bend first phalang of the first, second, third,fourth and fifth fingers, and extend the second and third phalang. |