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  2. Flexor digitorum profundus muscle - Wikipedia

    en.wikipedia.org/wiki/Flexor_digitorum_profundus...

    It is considered an extrinsic hand muscle because it acts on the hand while its muscle belly is located in the forearm. Together the flexor pollicis longus, pronator quadratus, and flexor digitorum profundus form the deep layer of ventral forearm muscles. [2] The muscle is named from Latin 'deep bender of the fingers'.

  3. Muscles of the hand - Wikipedia

    en.wikipedia.org/wiki/Muscles_of_the_hand

    The muscles of the hand can be subdivided into two groups: the extrinsic and intrinsic muscle groups. The extrinsic muscle groups are the long flexors and extensors. They are called extrinsic because the muscle belly is located on the forearm. The intrinsic group are the smaller muscles located within the hand itself. The muscles of the hand ...

  4. Muscles of the thumb - Wikipedia

    en.wikipedia.org/wiki/Muscles_of_the_thumb

    The muscles of the thumb are nine skeletal muscles located in the hand and forearm. The muscles allow for flexion, extension, adduction, abduction and opposition of the thumb. The muscles acting on the thumb can be divided into two groups: The extrinsic hand muscles, with their muscle bellies located in the forearm, and the intrinsic hand ...

  5. List of flexors of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_flexors_of_the...

    In anatomy, flexor is a muscle that contracts to perform flexion (from the Latin verb flectere, to bend), [1] a movement that decreases the angle between the bones converging at a joint. For example, one's elbow joint flexes when one brings their hand closer to the shoulder, thus decreasing the angle between the upper arm and the forearm.

  6. Flexor digitorum superficialis muscle - Wikipedia

    en.wikipedia.org/wiki/Flexor_digitorum...

    The primary function of flexor digitorum superficialis is flexion of the middle phalanges of the four fingers (excluding the thumb) at the proximal interphalangeal joints, however under continued action it also flexes the metacarpophalangeal joints and wrist joint.

  7. Finger - Wikipedia

    en.wikipedia.org/wiki/Finger

    Flexion is by far the strongest movement. In humans, there are two large muscles that produce flexion of each finger, and additional muscles that augment the movement. The muscle bulks that move each finger may be partly blended, and the tendons may be attached to each other by a net of fibrous tissue, preventing completely free movement.

  8. Dorsal interossei of the hand - Wikipedia

    en.wikipedia.org/wiki/Dorsal_interossei_of_the_hand

    In human anatomy, the dorsal interossei (DI) are four muscles in the back of the hand that act to abduct (spread) the index, middle, and ring fingers away from the hand's midline (ray of middle finger) and assist in flexion at the metacarpophalangeal joints and extension at the interphalangeal joints of the index, middle and ring fingers.

  9. Flexor pollicis brevis muscle - Wikipedia

    en.wikipedia.org/wiki/Flexor_pollicis_brevis_muscle

    The muscle's superficial head arises from the distal edge of the flexor retinaculum and the tubercle of the trapezium, the most lateral bone in the distal row of carpal bones. [1] It passes along the radial side of the tendon of the flexor pollicis longus .