ANAT 201 Lecture Notes - Lecture 6: Biceps, Triceps Brachii Muscle, Rectus Femoris Muscle
14 Sep 2016
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Document Summary
Functions of muscle: produce movement of skeleton by. Pulls on tendons that move bones: maintain body posture and position, support soft tissues, guard entrances and exists. In the form of sphincters: maintain body temperature. When contraction occurs, energy is used in the form and converted to heat: glycemic control. Cells are called myocytes, cardiomyocytes, cardiocytes: smooth muscle. Cells are called myocytes and are short and fusiform. Three layers of connective tissue: epimysium covers entire muscle, perimysium. Divides muscle into fascicles (bundles of muscle fibers) Blood vessels and nerves are contained in perimysium: endomysium. Covers each muscle fiber and ties them together. Contains capillaries and nerve tissue: fascia. Sheet that separates neighboring muscle and groups from each other. Classification of muscles according to fascicle orientation: fusiform. The brachialis is the prime mover during flexion of the elbow: synergistic. Same action, aids the prime mover: antagonistic. Does the opposite action of prime mover/synergistic group.
