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The function of this muscle is to rotate the head to the opposite side or obliquely rotate the head. [4] It also flexes the neck. [4] When both sides of the muscle act together, it flexes the neck and extends the head. When one side acts alone, it causes the head to rotate to the opposite side and flexes laterally to the same side (ipsilaterally).
Deep muscles of the chest, including pectoralis minor, serratus anterior, and subclavius (Gray 1918) Pectoralis major is a thick, fan-shaped or triangular convergent muscle, which makes up the bulk of the chest muscle. It lies under the breast. It serves to flex, extend, and rotate the humerus, the long bone of the upper arm.
The splenius cervicis (/ ˈ s p l iː n i ə s s ər ˈ v aɪ s ɪ s /) (also known as the splenius colli, /-ˈ k ɒ l aɪ /) is a muscle in the back of the neck.It arises by a narrow tendinous band from the spinous processes of the third to the sixth thoracic vertebrae; it is inserted, by tendinous fasciculi, into the posterior tubercles of the transverse processes of the upper two or three ...
The sternocostal part is antagonistic to the clavicular part contributing to downward and forward movement of the arm and inward rotation when accompanied by adduction. The sternal fibers can also contribute to extension, but not beyond anatomical position. [9] Hypertrophy of the pectoralis major increases functionality. Maximal activation of ...
Muscles Worked: A plank is a full-body exercise, but specifically, it works your transverse abdominis, rectus abdominis (aka the six-pack), internal and external obliques and scapular (shoulder ...
Benefits: A lumbar trunk rotation stretch is a great starting place, as it “helps loosen up the lower back and improve spinal mobility,” Prestipino explains. 2. Single knee-to-chest stretch
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 ...
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