Hello. Why does a person with muscles that have a higher percentage of slow fibers have greater endurance than a person with muscles that have a lower percentage of slow fibers? Please include references as well. Thank you!

Hello. Why does a person with muscles that have a higher percentage of slow fibers have greater endurance than a person with muscles that have a lower percentage of slow fibers? Please include references as well. Thank you!

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter38: The Musculoskeletal System

Section: Chapter Questions

Problem 22RQ: The muscle relaxes if no new nerve signal arrives. However the neurotransmitter from the previous...

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The spheres of physical activity experience include aspects of everyday life where physical activity is important. In general, the spheres recognize various purposes of physical activity in different contexts. The spheres of physical activity provide a broad basis for assessing the significance and prevalence of physical activity. There are seven spheres of physical activity experience.

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Hello Why does a person with muscles that have a higher percentage of slow fibers have greater endurance than a person with muscles that have a lower percentage of slow fibers? Thank you!
Why does a person with muscles that have a higher percentage of slow fibers have greater endurance than a person with muscles that have a lower percentage of slow fibers? Thank you!
Fatigue is not well understood. Some factors that have been proposed to explain the fall in force duringfatigue include: changes in the 'sense of effort', loss of 'central drive', failure of neuromuscular propagation, reduction in calcium release in excitation- contraction coupling, metabolic changes in the muscle, and reduction in muscle blood flow owing to compression of blood vessels. 1. Do your experiments help to decide which factors are important?
Provide a explantion and diagram of the Intracellular mechanism of smooth muscle relaxation via antagonists such as atropine binding and blocking muscarinic receptors M3. explain how Atropine blocks the acetylcholine receptors
Describe the functions of gamma motor neurons and explain why they are stimulated at the same time as alpha motor neurons during voluntary muscle contractions.
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II. Real life problem. You are a trainer and are called on to the field where a player is down with a severe cramp of his right hamstring (biceps femoris) muscle. You know that cramps are caused by over-active motor nerve activity to the muscle. Your associates want to stretch the cramping hamstring, but you say, “No! I want the player to concentrate on contracting his right quadriceps muscles before we stretch.” Why might stretching a cramping muscle INCREASE the cramping?
Why does a person with muscles that have a higher percentage of slow fibers have greater endurance than a person with muscles that have a lower percentage of slow fibers?
In your own words, describe the main events occurring between the arrivalof an action potential at a motor neuron end plate and contraction of thecorresponding muscle. Use 250 words or less.
25 Which of these statements best describes the process of refinement in motor cortex during motor learning? a. The number of active neurons does not change much in this region during learning b. Not many neurons are active at first, but this number increases as the skill becomes fully learned c. Many neurons are active at first, but this number decreases once skill is fully learned d. Many neurons are active at first and remain active through all stages of skill acquisition