Muscle: Location, Action, Shape, And Function

Superior Essays
Evaluate how the name of a muscle can distinguish its location, action, shape, and function. Select five different muscles to make this distinction.
Depending on the anatomical position of the body part, certain prefixes, and suffixes are utilized in order to find its location verbally. These prefixes and suffixes can be described by the: size of the muscle, location of the muscles, direction of the muscle fibers, amount of origins, shape of a muscle, and location of a muscle origin/insertion. For example listed are the five different muscles: gluteus maximus the first word indicates its location of the muscle its association to a bone, region, and its size; extensor carpi ulnaris the first word indicates it is an action muscle, the second
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Appendicular muscles help the pelvic girdles, pectoral girdles, and the limbs. The appendicular muscles stabilize and positions the pectoral/pelvic girdles producing movement to the upper and lower limbs. The two major groups of appendicular muscles consist of the muscles of the shoulders/upper limbs and the muscles of the pelvis/lower limbs. Muscles of the shoulders and upper limbs are divided into four categories: muscles that position the pectoral girdle, muscles that move the arm, muscles that move the forearm/hand, and muscles that move the hand/fingers. Muscles that position the pectoral girdle include: trapezius (it is superficial covering the back and neck up to the base of the skull inserting on the clavicles and scapular spines), rhomboid/levator scapulae (it is deep to the trapezius attaching to cervical/thoracic vertebrae inserting on the scapular border), serratus anterior (located on the chest originating along the ribs inserting on anterior scapular margin), subclavius (originates on the ribs and inserts on the clavicle), and pectoralis minor (attaches to the scapula). Muscles that move the arm consist of: deltoid (the major abductor), supraspinatus (assists the deltoid), subscapularis/teres major (produce medial rotation at the shoulder), infraspinatus/teres minor (produce lateral rotation at the shoulder), coracobrachialis (attaches to the scapula producing flexion and adduction at …show more content…
Muscles of the lower limbs include: sartiorius, rectus femoris, vastus lateralis, vastus medialis, gastrocnemius, and tibialis anterior/the Soleus. The similarities of the upper and lower limb muscles are relatively large on both sides of the limb to control the motion in the part of the limb closest to the abdomen. The second stage of each limb tends to only have a large muscle on one side of the limb reflecting the limited range of motion attributed by the elbow and knee joints. The differences consist of the lower leg muscles are larger and stronger due to the greater load bearing capabilities. Muscles of the upper limbs such as the deltoid muscle in the arm does not have a direct analogy in the leg since the leg does not have a greater range of motion compared to the arm as the muscles of the hip joint does not require the exertion efforts in as many directions as the shoulder requires (Sdmiramar,

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