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  2. Muscles of the thumb - Wikipedia

    en.wikipedia.org/wiki/Muscles_of_the_thumb

    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 muscles, with their muscles bellies located in the hand proper.

  3. Abductor pollicis brevis muscle - Wikipedia

    en.wikipedia.org/wiki/Abductor_pollicis_brevis...

    Abduction of the thumb is defined as the movement of the thumb anteriorly, a direction perpendicular to the palm. The abductor pollicis brevis does this by acting across both the carpometacarpal joint and the metacarpophalangeal joint. It also assists in opposition and extension of the thumb.

  4. Muscles of the hand - Wikipedia

    en.wikipedia.org/wiki/Muscles_of_the_hand

    The radial nerve innervates the finger extensors and the thumb abductor; that is, the muscles that extend at the wrist and metacarpophalangeal joints (knuckles) and abduct and extend the thumb. The median nerve innervates the flexors of the wrist and digits, the abductors and opponens of the thumb, the first and second lumbricals. The ulnar ...

  5. Thenar eminence - Wikipedia

    en.wikipedia.org/wiki/Thenar_eminence

    Abductor pollicis brevis abducts the thumb. This muscle is the most superficial of the thenar group. Flexor pollicis brevis, which lies next to the abductor, will flex the thumb, curling it up in the palm. (The flexor pollicis longus, which is inserted into the distal phalanx of the thumb, is not considered part of the thenar eminence.)

  6. List of abductors of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_abductors_of_the...

    Abduction is an anatomical term of motion referring to a movement which draws a limb out to the side, away from the median sagittal plane of the body. It is thus opposed to adduction . Upper limb

  7. Understanding Abduction Vs. Adduction Will Level Up ... - AOL

    www.aol.com/understanding-abduction-vs-adduction...

    “For example, sticking your leg out is an abduction muscular movement (pulling away), while the act of drawing that same leg back toward the body would be an adduction movement.”

  8. Abductor digiti minimi muscle of the hand - Wikipedia

    en.wikipedia.org/wiki/Abductor_digiti_minimi...

    In human anatomy, the abductor digiti minimi (abductor minimi digiti, abductor digiti quinti, ADM) is a skeletal muscle situated on the ulnar border of the palm of the hand. It forms the ulnar border of the palm and its spindle-like shape defines the hypothenar eminence of the palm together with the skin, connective tissue, and fat surrounding it.

  9. Abductor pollicis longus muscle - Wikipedia

    en.wikipedia.org/wiki/Abductor_pollicis_longus...

    An accessory abductor pollicis longus (AAPL) tendon is present in more than 80% of people, and a separate muscle belly is present in 20% of people. In one study, the accessory tendon was inserted into the trapezium (41%); proximally on the abductor pollicis brevis (22%) and opponens pollicis brevis (5%); had a double insertion on the trapezium and thenar muscles (15%); or the base of the first ...