PPT-Neuromuscular Junctions Physiology of Muscle Fibers

Action Potentials The Role of Motor Neurons Motor neurons produce motion by interacting with skeletal muscle Electric signals called action potentials are sent along nerve cells to muscle fibers. Fast or Slow?. Skeletal muscles contain two main types of fibers, which differ in the primary mechanisms they use to produce ATP, the type of motor neuron innervation, and the type of myosin heavy chain expressed. The proportions of each type of fiber varies from muscle to muscle, from animal to animal, and from person to person.. Overview of the Neuromuscular System . Nervous . system and muscles are working together to . allow movement . In order t. o . move a part. of . your . body, . a message is sent to particular nerve cells which are called upper motor neurons. . Physiology of Training. PE 254. Muscle Physiology. Muscles consist of many . muscle fibers (cells). connected in bundles . Muscle fibers are made up of . myofibrils. Strength training increases the number of myofibrils and the size of muscle fibers = . 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. Exam 1 Study. chapters 1-5. 2. The cytoplasm includes all material inside the cell membrane except for_____.. 3. Nucleus. 4. Which elements make up 90% of your body’s mass?. 5. Carbon. 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 . Muscle Fibers. Muscles are made of many individual cells called fibers. The . Fascia. connects the individual fibers to form a muscle and it separates muscles from each other. . Muscles have 3 layers of C.T.. Muscular System Functions. Body movement (Locomotion). Maintenance of posture. Respiration. Diaphragm and . intercostal. contractions. Communication (Verbal and Facial). Constriction of organs and vessels. Who are our Neuromuscular Great . Great. grandfathers ?. Shy, Engel, Brooke, & the NIH connection. Richard J. Barohn, M.D.. Gertrude and Dewey Ziegler Professor of Neurology. The University of Kansas Medical Center. Skeletal – striated & voluntary. Smooth – involuntary. Cardiac - heart. The word “striated” means striped. . Muscles and Muscle Fiber. Structure.     . Muscles are composed of many . By Sonia Trejo and Hailey Scoggins. Tight Junctions. At tight junctions the plasma . membranes of neighboring cells are . very tightly pressed against each . Other. . Bound together by specific . proteins (purple).. Neuromuscular junction. Neuromuscular junction :. the synapse between motor neuron and muscle . fibre. Motor neurons :. are the nerves that innervate (power) muscle . fibres. . Motor unit : . single motor neuron and the muscle . presented by. Suman.Thota. M.Pharm . II-Semester. Department. of Industrial Pharmacy. UNIVERSITY COLLEGE OF PHARMACEUTICAL SCIENCES. KAKATIYA UNIVERSITY. WARANGAL. . . Neuromuscular blockade in Critical Care. Aim. . To provide guidance on the administration and monitoring of neuromuscular blockade in Critical Care. Scope. All adult patients in intensive care receiving continuous neuromuscular blockade.