ANATOMY ASSIGMENT- THE MUSCULAR SYSTEM Q9.Explain how the muscle produces movement and different types of contraction.(M3) Sliding filament theory. Each muscle fibre is made up of smaller fibres called myofibrils. These contain even smaller structures called actin which is a thin‚ contractile protein filament‚ containing ’active’ or ’binding’ sites and myosin filaments which are a thick‚ contractile protein filament‚ with Myosin Heads. These filaments slide in and out between each other to form
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Energy for performance year 11 phys ed term 3 – touch football Health – related * Aerobic capacity * Muscular strength * Muscular endurance * Flexibility * Body compisistion Sport/skill related * Muscular power * Agility * Speed * Balance * Coordination Aerobic capacity * Also called stamina‚ general endurance‚ heart-lung fitness * “The ability to keep producing energy aerobically and using it to perform tasks involving the whole body for extended
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Muscular endurance is very important for people playing sports and who have to sustain an activity for long periods of time. Muscular endurance is determined by how well your slow twitch muscle fibers are developed. In case your wondering what slow twitch muscle fibers are‚ I will explain. There are generally two types of muscle fibers in your body‚ slow twitch and fast twitch. Slow twitch muscle fibers cannot exert as much force as fast twitch‚ but can sustain an effort over a much greater period
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The Muscular System: Contraction of Motor Units 1. Define a motor neuron:_____A single nerve cell that branches from the brain or the spinal cord to a muscle or a gland. 2. Define a motor unit: ___A motor neuron and all of the muscle fibers it stimulates. 3. The synapse between a motor neuron and the muscle it innervates is called a ____neuromuscular junction_______. 4. The stimulation of additional motor units will increase the strength of the contraction. This process is called
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generations. 3. Could Greg or his mother be carriers of the gene that causes myotonic dystrophy? No‚ according to the pedigree neither Grey nor his mother have the disease; therefore‚ neither one can be a carrier. 4. Is there a possibility that Greg’s aunt or uncle is homozygous for the myotonic dystrophy (md) gene? No‚ there is not a possibility that Greg’s aunt or uncle is homozygous for the myotonic dystrophy. This is because Greg’s grandfather did not have the gene. 5. What is the possibility
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single‚ fusiform‚ uninucleated‚ no striations‚ involuntary‚ can stretch‚ found mostly in walls of hollow visceral organs but not the heart‚ very slow contraction The muscular system: The function of muscle tissue is to contract or shorten to cause movement‚ maintain posture‚ stabilize joints‚ and generate heat. The term muscular system applies specifically to the skeletal muscle Endomysium – delicate connective tissue sheath enclosing muscle fibers Perimysium – coarser fibrous membrane that
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Muscular and Flexibility Project (Teen Class) My class participants have a good overall health. Many of them have strong upper body strength and a moderate strength on the legs. They lack a core body and abdominal strength and have very low levels of flexibility. They need the most amount of work in flexibility. Weekly Routine for Flexibility Workout Day Flex Exercises Muscle Stretched Reps Time Reps Time Reps Time Mon Lying Quad Stretch Quads 4 20 4 20 4 25 Mon Modified
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The Effectiveness of Anesthesia on Spinal Muscular Atrophy Such diseases can affect the muscles. Asides from diseases‚ muscles can also be affected by its conditions. Muscular atrophy is when muscles waste away. Muscle wasting can be caused by a lack of physical activity due to a disease or injury‚ making it difficult or impossible to move certain body parts‚ such as a leg or an arm. There are other causes for muscle atrophy as well‚ but the lack of physical activity occurs to be the main reason
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Case Study 1 1. The Neuromuscular junction uses synapses to connect the muscular system with the muscular system. A nerve impulse is sent from the brain down to the motor neuron by way of the axon. Acetylcholine is released after the vesicles break open. Sodium channels are opened from Acetylcholine that bonds to the Acetylcholine receptors. Depolarization happens when Acetylcholine causes an area of the muscle fiber to become a little more positive when it leaves the nerve and docks on receptors
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Duchenne muscular dystrophy is an inherited disease that is also known as muscle weakness that gets worst after a short period of time. Duchenne muscular dystrophy is caused by defected gene for dystrophy which is a protein in the muscle that is often said to be passed down from generation from family members. Duchenne muscular dystrophy is more common in people without any family history. Duchenne muscular dystrophy is known to only effect guys. Due to the way this gene in inherited‚ girls are not
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