The functions of the trapezius are diverse and are best understood by actions of the individual bands of muscle fibers within the trapezius. The superior fibers typically act upon the scapula by elevating it (as in shrugging) or by bracing the shoulder when a weight is carried. When other mu...
Picture 1. Trapezius anatomy: origin, insertions, actions Video 1. Trapezius anatomy: origin, insertion, action Trapezius Pain Acute Trapezius Pain Acute pain in the trapezius muscle can be caused by a contusion, strain or tear. Trapezius Strength Test Decreased strength in the trapezius speaks for...
Trapezius Muscle Actions The trapezius is involved in quite a few actions, mostly because it is present in more than one body region. The trapezius is present in the neck, shoulders, back, and thorax regions. Most of its actions are in the shoulders, where the muscle inserts onto the scapu...
Trapezius contraction of the superior fibers will elevate scapula (shurgging shoulders), cx of inferior fibers will depress the scapula, cx of middle fibers will adduct the scapula, cx of the most superior region will extend and hyperextend the head Deltoid abducts arms, also assists in flexio...
The trapezius muscle is a large, thin, triangular muscle that originates from the superior nuchal line and external occipital protuberance, the ligamentum nuchae, the seventh cervical vertebra and all the thoracic vertebrae. Explore on ScienceDirectopens in new tab/window...
Human muscle system - Evolution, Anatomy, Function: The arrangement of striated muscle in modern humans conforms to the basic plan seen in all pronograde quadrupedal vertebrates and mammals (that is, all vertebrates and mammals that assume a horizontal a
muscles are very important in moving the head and cervical spine. I tried hiding the trapezius muscle group to see if there was another layer and could not find it. But it should be there as well. Let me know if it’s truly there and I’m just crazy. Haha thanks for this app so ...
Shoulder muscles move the shoulder blades and upper arm bones. The main shoulder muscles are trapezius, deltoid, pectoralis major and 4 rotator cuff muscles: subscapularis, supraspinatus, infraspinatus and teres minor. The list of muscles and their functions are presented below. Muscle attachments ...
Descending part- originates from the medial third of the superior nuchal line, theexternal occipital protuberance,nuchal ligamentand the cervical vertebrae. It inserts into the lateral third of the clavicle. This part of the trapezius supports and draws the scapula superiomedially. In addition, it...
Sarcoplasmic reticulum.Another very important muscle fiber organelle is the sarcoplasmic reticulum, a specialized smooth endoplasmic reticulum; the interconnecting tubules and sacs of the SR surround each and every myofibril just as the sleeve of a loosely crocheted sweater surrounds your arm, and its ...