PPT-Diseases of skeletal muscle

Ali Al Khader MD Faculty of Medicine AlBalqa Applied University Email alialkhaderbauedujo Lecture outline Skeletal muscle atrophy Inflammatory myopathies D ermatomyositis Polymyositis. What is Muscle Tissue?. Composed of cells that are highly specialized to shorten in length by contractility.. Made up of cells that are called . myocytes. .. Elongated in one direction (muscle . fibres. Muscular . System Functions:. Muscle Tissue Can Contract (shorten) and Relax (lengthen). This causes mobility and provides support.. Allow for movement of:. skeleton – muscles are connected to bones. Muscle Tissue Characteristics. Contractile. Made of contractile proteins. Cells are called fibers. Skeletal Muscle. 40% of body weight. Under voluntary control; attached to skeleton. Striated, or banded, appear. Skeletal Muscle. Human body contains over 400 skeletal muscles. 40-50% of total body weight. Functions of skeletal muscle. Force production for locomotion and breathing. Force production for postural support. Composed of cells that are highly specialized to shorten in length by contractility.. Made up of cells that are called . myocytes. .. Elongated in one direction (muscle . fibres. ).. Special Terms. Plasma Membrane . 1. Gives shape and support. 2. Protects internal organs. (Skull, Rib-cage). 3. Muscles attach to bones.. 4. Blood cells are formed in bone marrow. . 5. Calcium and Phosphorous storage. . http://kidshealth.org/kid/htbw/SSmovie.html. As it contracts it . -causes movement. -maintains posture. -stabilizes joints. -and generates heat. . Muscle Types. Skeletal muscle (voluntary). muscle attached to the skeleton. cells are long, striated, and multinucleate. Objectives. Histologically identify and functionally characterize each of the 3 types of muscle tissues.. Describe the organization of the sarcomere as seen in light and electron microscopy.. Identify the . Learning Objectives. Describe the . anatomy . and . physiology . of skeletal muscle. Role of muscle fiber types as it relates to different types of athletic performances. Histochemical . techniques for identification of muscle fiber types. Sabrina Barner, Abbe Carlin, Amber Weigle. Neuromuscular Junctions. Communication link between nervous system and skeletal muscle fiber. Specialized intercellular connection. Each skeletal muscle fiber is controlled by a nerve cell. The Skeletal System . Skeletal System – bones of the body, shields important organs, gives your body shape. Skull protects the brain / Ribs Protect your heart and lungs / Back bone protects your spinal cord. Shoup. Skeletal System. Know 4 of the 6. Six Purposes for the Skeletal System. 1. Support. 2. . Movement with muscle function. 3. Shape. 4. Marrow-Yellow/Red Red/White Blood Cells. 5. Protection-Flat bone. Syed Asaad Hussain. Spencer Ryan Keilich. Stephanie Jo Lindow. Shreyas Renganathan . Overview. Background. Significance . Drug Approval Process. Background Research. Current Devices. Project Direction. Dr. Tamara . Alqudah. Aim of the experiment. Learn some of the characteristics of skeletal muscle contraction. Simple muscle twitch. Summation . Tetanization. Fatigue. Treppe. phenomenon. Muscle twitch.