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Adducts, extends and internally rotates the arm when the insertion is moved towards the origin. When observing the muscle action of the origin towards the insertion, the lats are a very powerful rotator of the trunk. Antagonist: Deltoid and trapezius muscle: Identifiers; Latin: musculus latissimus dorsi: TA98: A04.3.01.006: TA2: 2231: FMA ...
Secondly, its contraction causes ipsilateral rotation and side-bending. It acts with the external oblique muscle of the opposite side to achieve this torsional movement of the trunk. For example, the right internal oblique and the left external oblique contract as the torso flexes and rotates to bring the left shoulder towards the right hip.
The muscles of internal rotation include: of arm/humerus at shoulder. Anterior part of the deltoid muscle [1] Subscapularis [1] Teres major [1] Latissimus dorsi [1] Pectoralis major [1] of thigh/femur at hip [2] Tensor fasciae latae; Gluteus generalis; Anterior fibers of Gluteus meralis; Adductor longus and Adductor brevis; of leg at knee [3 ...
The serape effect is a rotational trunk movement that increases the power output of the human body. It is trained in sports that involve rotation of the torso, such as boxing and discus throwing. The muscles involved in the serape effect are stretched and then snap-back with increased strength. It is named after a piece of clothing called the ...
The major muscles of the legs (quadriceps, hamstrings, and glutes) should always be a primary focus, Booth says, but what is often overlooked is the importance of the core musculature and the ...
flexes trunk to same side, rotates trunk to opposite side, expiration, compresses abdominal organs: 2 1 internal abdominal oblique: Torso, Abdomen, right/left anterior two-thirds of iliac crest, iliopectineal arch, thoracolumbar fascia: inferior borders of ribs 10–12, pubic crest
Spinal erectors: The spinal erectors are a group of muscles in the back that allow you to straighten and rotate the spine. “Those are our prime stabilizers because they hold the trunk in place ...
The linea alba is a white, fibrous band that is made of the bilateral rectus sheaths that join at the anterior midline of the body. These enclose the rectus abdominis muscles (a pair of long, linear muscles, commonly called the “sit-up” muscles) that originate at the pubic crest and pubic symphysis, and extend the length of the body’s trunk.