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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. [1]
In the case of fingers and toes, it is bringing the digits together, towards the centerline of the hand or foot. Dropping the arms to the sides, and bringing the knees together, are examples of adduction. [15] Adduction of the wrist is also known as ulnar deviation which moves the hand towards the ulnar styloid (or, towards the little finger).
The iliotibial tract or iliotibial band (ITB; also known as Maissiat's band or the IT band) is a longitudinal fibrous reinforcement of the fascia lata.The action of the muscles associated with the ITB (tensor fasciae latae and some fibers of gluteus maximus) flex, extend, abduct, and laterally and medially rotate the hip.
The adductor longus arises from the body of pubis inferior to pubic crest and lateral to pubic symphysis. [1]It lies ventrally on the adductor magnus, and near the femur, the adductor brevis is interposed between these two muscles.
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.
In the remaining cases, it is either inserted into the upper part of the pectineal line or the posterior part of the lesser trochanter. While similar to its neighbouring adductors, it is formed by separation from the superficial layer of the obturator externus , and is thus not ontogenetically related to the adductors.
In his two years as a Flex driver in Florida, Polenz said he has learned that Amazon usually drops new shifts in the app around 10:30 to 11:30 a.m. and 2:30 to 4:30 p.m.
A U.S. marine performing a pull-up. A pull-up is an upper-body strength exercise.The pull-up is a closed-chain movement where the body is suspended by the hands, gripping a bar or other implement at a distance typically wider than shoulder-width, and pulled up.