What makes for faster muscle? At what cost? Answer this both for fast-twitch compared to slow-twitch muscle in vertebrates and for muscle specializations for high-speed in vertebrates and invertebrates.
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What makes for faster muscle? At what cost? Answer this both for fast-twitch compared to slow-twitch muscle in vertebrates and for muscle specializations for high-speed in vertebrates and invertebrates.
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- Vhat are the two types of muscle movement categories? Give an example for both. Describe Swammerdam's experiment and Galvani's experiment with frog legs. What did they tell us about muscle contraction? What is the sliding-filament model for muscle contraction? Describe the role of actin and myosin of sarcomeres in the model (be specific). Describe how an action potential triggers muscle contraction. Know the specific molecules involved. . Describe the structural and functional differences between smooth, cardiac and skeletal muscles. What are the three types of skeletal muscle fibers and how do they differ in structure and function? Next « Previous MacBook ProWhat are the two types of muscle movement categories? Give an example for both. E. Describe Swammerdam's experiment and Galvani's experiment with frog legs. What did they tell us about muscl contraction? 3. What is the sliding-filament model for muscle contraction? Describe the role of actin and myosin of sarcomeres in the model (be specific). 4. Describe how an action potential triggers muscle contraction. Know the specific molecules involved. 5. Describe the structural and functional differences between smooth, cardiac and skeletal muscles. What are the three types of skeletal muscle fibers and how do they differ in structure and function? Next « Previous MacBook ProA study of muscle fibers between chimpanzees and humans revealed that although muscle mass per body size are approximately equivalent, the ratio of red (slow) and white (fast) fibers were significantly different. Chimps tend to have a ratio of 30% red to 70% white where humans are 60/40 respectively. Speculate about what this ratio difference means in terms of muscle activity potential and a possible evolutionary significance of this difference.
- What are the two types of muscle movement categories? Give an example for both. Describe Swammerdam's experiment and Galvani's experiment with frog legs. What did they tell us about muscle contraction? . What is the sliding-filament model for muscle contraction? Describe the role of actin and myosin of sarcomeres in the model (be specific). 4. Describe how an action potential triggers muscle contraction. Know the specific molecules involved. 5. Describe the structural and functional differences between smooth, cardiac and skeletal muscles. What are the three types of skeletal muscle fibers and how do they differ in structure and function? Next « Previous MacBook ProSkeletal muscle is described as striated. What are the lighter, thinner stripes noted under the microscope? Group of answer choices troponin actin myosin dystrophin Rather than innervating individual muscle fibers, motor neurons often innervate two or more muscle fibers. The motor neuron and the muscle fibers it innervates are together called a: Group of answer choices motor unit myofibril muscle fascicle motor fascia Fast glycolytic muscle fibers allow for relatively quick ATP energy production by splitting glucose (but eventually leads to fatigue), a process described as: Group of answer choices fermentation aerobic pathway anaerobic pathway ATP reserve useReflect back on the Muscle Fatigue investigation we did earlier in this Activity. Choose one of your classmate’s interpretation to one of these questions: What happened to your energy & ability to pinch the clothespin as you progressed through each trial? Why? What might cause one to be able to get more squeezes, in other words, to have less fatigue? Explain in terms of biological concepts. Suggest how the amount of ATP produced cause your muscle cells to be less efficient. When did this change in the amount of ATP produced occur in this investigation? How could you tell? Your muscles would probably recover enough after 10 minutes to operate at the original efficiency. Explain why. Show how specific details from the steps of cellular respiration add details to answer this question.
- Gather information on the structure and function of skeletal, cardiac and smooth muscle. Combine all this information to create a brief guide to the structure and function of vertebrate muscle. Points that you need to consider include cell shape; cell size; number of nuclei per cell; position of the nuclei; presence or absence of striations; presence or absence of branching; and presence or absence of intercalated discs.b) Follow the table with a one-sentence explanation of what an intercalateddisc is. c) Briefly explain what happens to actin and myosin in muscle during rigor mortis.Compare the composition of flight muscles with a powerful locomotive muscle in terms of mitochondria, myofibrils, or sarcoplasmic reticulum (assume these components make up 100% of the muscle volume). Explain your answer.Using the biceps brachii as an example, describe the biochemical and mechanochemical series of events that enables motor neurons to trigger muscle contraction. Thank you!
- Experimenters can separate F-actin thin myofilaments frommyosin thick myofilaments. First they homogenize musclecells in a blender (to break cell membranes); then they place thehomogenate in a Ca2+-free “relaxing solution” that contains ATP.Explain why ATP must be present and Ca2+ ions must not bepresent in order to isolate thick and thin myofilaments from eachother.How does the activation of vertebrate skeletal muscle differ from the activation of arthropod muscle fibers? comments : please give me answer precise and best of your knowledge. thanksHow are motor neurons involved in muscle contractions? Select all that apply. The release of calcium ions into muscle fiber causes a shift in the proteins of thick filaments, allowing myosin to bind to actin. The release of calcium ions into muscle fiber causes a shift in the thin filaments, allowing myosin to bind to actin. A signal from the motor neuron leads to the release of calcium ions from the muscle fiber's sarcoplasmic reticulum. Muscle fibers respond to signals from motor neurons whose axon endings lie far from the muscle fiber.