In order to excite a skeletal muscle, the neurotransmitter must bind to: a)calcium channels. b) potassium channels. c) sodium channels.

Q: 3) List and define the organizational structure of skeletal muscle beginning with the sacrcomere up…

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Q: 2) The longissimus (intermediate) muscle group is controlled by nerves from the: a) anterior…

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Q: The molecule responsible for aggregation of nicotinic acetylcholine receptors on the post-synaptic…

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Q: A client asks your advice on how to best prevent lean body mass loss through diet. What…

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Q: Discuss the causes, signs and symptoms and treatments of three major homeostatic imbalances under…

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Q: A weightlifter tries to lift a weight off the floor, but cannot upset it. Is the contraction: a)…

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Q: Identify the organelle most likely responsible for each cellular job within skeletal muscle  a)…

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Q: The increase in muscle force that is thought to be due to neural changes with a strength training…

A: Muscles These are soft tissues made up of many stretchy fibers. There are more than 600 muscles in…

Q: What type of cells sit outside the sarcolemma of a muscle fiber but below the basement membrane of…

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Q: 12. The following is an example of skeletal mu a) Stomach b) Intestines c) Blood vessels -d) Biceps…

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Q: 13) skeletal muscle fibers contract because thick filaments slide over and between thin filaments…

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Q: Which neurodegerative disorder affects skeletal muscle stimulation? 1) Alzheimer's disease 2)…

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Q: ach

A: B. ACH or Acetylcholine is the only neurotransmitter that is present in the somatic muscular…

Q: 10. Which of the following is a calcium release channel? A)Ryanodine receptor B)Tropomyosin C)DHP…

A: A calcium channel can be defined as an ion channel that is selectively permeable to the calcium…

Q: A)Fill in the blanks below regarding sarcomeres: In a sarcomere, thin filaments are composed…

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Q: Muscles are powered by: A) Bone marrowB) Electrical impulsesC) IodineD) Gravity

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Q: The figure seen here represents which type of muscle fiber? a.) Type IIx- very fast, fatigable b.)…

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Q: fibrous, flattened, sheet-like tissue that connects some muscles to bones is        A)tendon…

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Q: 9. Which of the following correctly describes the end plate potential (EPP)? A)It is primarily…

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Q: 1. Which of the following is a possible way to distinguish between muscle types? A) Skeletal muscle…

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Q: What cellular changes could cause the skeletal muscle to become rigid?

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Q: Muscular strength is defined as the: O a) ability of a muscle to contract with maximal force b)…

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Q: What effect does physostigmine have on smooth muscle contraction? a) no effect on the smooth muscle…

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Q: A) tetany is rapid spasm in the muscle. B) Tetany is usually caused by an increase in the blood…

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Q: property of muscle? a) cells are non- elastic b) cells are excitable

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Q: 11) Imagine that you go the spa and sit in the dry sauna (where it is very hot) for longer than the…

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Q: Describe how each of the following factors influences motor unit recruitment: a) Increasing…

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Q: A muscle fiber is the same thing as a: a) myofibril. b) myocyte. c) myofilament. d) fascicle.

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Q: The size of a motor unit (i.e., the # of muscle fibers innervated) can directly influence which of…

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Q: 8. Which muscle fiber type is always recruited first? A)Type IIa B)Type IIb C)Type I or type IIa,…

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Q: Troponin binds to actin to cover the myosin binding site. a.) True b.) False

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Q: 5) what causes the plateau phase during a cardiac muscle action potential? a) open voltage gated K+…

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Q: When an action potential runs down the surface of the sarcolemma, the muscle doesn't immediately…

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Q: 1) During physical exercise, our bodies' primary source of energy are: 2) A measure of the maximum…

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Q: Individual motor units can vary based on which of the following? (SELECT ALL THAT APPLY) a.) The…

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Q: 1) Which of the following components of skeletal muscle tissue is absent from smooth muscle tissue?…

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Q: Choose the best description of how myosin and actin are arranged within the two types of protein…

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Q: Which of the following can respond to increased stimulation with a graded response: a) motoraxon…

A:

Q: a sample of muscle obtained from an experimental animal is bathed in a solution containing elements…

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Q: OG2: a. Describe the effect of each of the following on the function of Kinesin, Dynein and Myosin:…

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Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.