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Determine the isoelectric point of myofibrillar proteins here in this experimental data
myofibrillar proteins are proteins found in muscles that help to contract them, comprising roughly 30% of muscle mass, and they don't have an isoelectric point because this type of protein does not contain any charged amino acids.
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- 28. 39-43 TRUE OR FALSE Sarcolemma is the plasma membrane of the muscle fiber. Myosatellite cells, remain closely associated with the plasma membrane. Lymphatic vessels are seen only in the perimysium. Capillaries are in close contact with skeletal muscle fibers. Nebulin, the largest known proteins, connects the Z band to the M band The normal time for turnover of keratinocytes from stratum basale to uppermost stratum corneum varies from 20 to 75 days04. List five proteins of the myofilaments and describe their physical arrangement.?0.75/ Question 20 What is the difference between treppe and tetany? Mark ALL that apply. there is no summation in tetany there is no summation in treppe the contractions successively increase giving a "staircase" image treppe goes away after muscle is fully warmed up treppe is caused by gradual warming of an unstimulated muscle thus increasing diffusion of ions and protein movement needed to cause contractions.
- Weight training causes fast glycolytic fibers to hypertrophy (increase in diameter). Explain why this increases strength.What do you mean by myosin myofilaments?44 45 Muscular atrophy occurs when: A BO CO Muscle fibers shrink and get significantly weaker because they aren't being used. A patient lacks the coordination needed to walk normally. Muscles increase in size due to exercise. DO Fat replaces muscle tissue in children. What does it mean when the PT says a patient's legs scissor when he ambula
- 3.4. About human skeletal muscle contraction, what are the correct statements? PHYSIOLOGY_basic (OJO) A muscle fiber is made by the parallel apposition of sarcomers. Generation of force relies on the formation of cross-bridges between actin and myosin filaments. In the process of contraction, adenosine triphosphate (ATP) is required both to drive the actin-myosin association-dissociation cycle and to recycle calcium back to the endoplasmic reticulum. Each muscle fiber is innervated by one neuron only. T tubules are plasma membrane invaginations of the sarcolemma that allow excitation-contraction coupling.Now in your own words, EXPLAIN (1) howa neural impulse is transferred to a muscle cell this is the process of “muscle excitation"), and (2) how the electrical impulse travels into he T-tubules and causes calcium to be released from the sarcoplasmic retículum (this is the process of “excitation-contraction coupling"): OMADidoinos reticulum 5. se mo S1e hosph erah anism96. An investigator is studying the contraction and relaxation of vascular smooth muscle in an experimental animal model. Which of the following describes the most likely order of events during this process? 0000000 200602 H) Myosin Light Chain Phosphorylation 1 2 2 3 3 4 4 Binding of Calcium to Calmodulin 3 1 4 2 4 2 3 Myosin Light Chain Dephosphorylation 2 3 4 3 4 2 1 2 Calcium Entry Into the Cell 4 2 3 1 1 1 3 1
- Which of the following statements about glycolytic fibers is true?Muscle fatigue occurs because of.. A relative deficit of ATP Excessive accumulation of lactic acid Ionic imbalances Depletion of nutient stores All of the aboveThe filaments of skeletal muscle are moved by free energy derived from the hydrolysis of ATP. During sustained muscle contraction ATP levels remain fairly constant, while levels of creatine phosphate fall. Explain why this is so. Under what circumstances is an oxygen debt incurred during muscle contraction?