Explain how your musculoskeletal system uses this mechanism to generate force. What is represented by (1) and (2) in the third figure? In comparison to the other mechanisms available to generate force (by muscles), how effective is this mechanism for controlling the generation of force?

Q: What prevents cross-bridges from attaching to sites on the thinfilaments in a resting skeletal…

A: Muscles are the tissues able to contract in response to stimuli.

Q: Compare the composition of flight muscles with a powerful locomotive muscle in terms of…

A: Flight muscles are a type of muscle which is found in birds or insects. This muscle helps birds or…

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

A: Skeletal muscles make up the most part of our muscles. They account for around 30 to 40 percent of…

Q: Briefly explain how does cross-bridge formation affect muscle force.

A: During muscle contraction, a force is generated in the muscle. This is termed the muscle force. This…

Q: Assuming that the mass (weight) of these three different muscles is the same, WHICH most power, for…

A: Understanding Muscle powerA vital component of human biomechanics, Muscular power generation is…

Q: Define the following and give an example of each:origin, insertion, agonist, antagonist, synergist,…

A: Muscle is present in most animals as soft tissue. Muscle cells produce actin and myosin protein…

Q: ney: Load (L) = 5 kgs E = Effort F = Fulcrum Weight of forearm = 1.8 kgs L- Load Biceps brachi…

A: Muscle is utilized to support joints and keep them protected from collapsing under stress. Smooth…

Q: Which of the following muscle cell components helps spread the depolarization of the muscle cell…

A: The objective of the question is to identify the muscle cell component that is responsible for…

Q: At what length will a sarcomere be able to generate the greatest amount of tension? Why?

A: The basic contractile unit of the muscle fibre is called a sarcomere. It consists of two filaments…

Q: Based on the picture below describe the different criteria that contribute to how skeletal muscles…

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Q: Discuss the All or None Law of Muscle contraction.

A: The tightening, decreasing, or lengthening of muscles during an activity is known as muscular…

Q: Hill's equation gives a relation between muscle contraction rates νν and muscle tension TT…

A: We have to rewrite the equation in a form to show that T is dependent on v including T0, alpha and…

Q: How can I describe skeletal muscle contraction using the words "upper motor neuron" and "lower motor…

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Q: What happened to the number of fibers contracting as you increased the voltage? b) In light of the…

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Q: Summation in a single muscle fibre means that Select one: a. the fibre increases the frequency of…

A: Introduction Muscle contraction:- It is the activation of tension-generating sites within muscle…

Q: identify the incorrect statement about skeletal muscle  (A) the epimysium, perimysium, and…

A: Concentric isotonic contractions - contractions that involve shortening of the muscle are referred…

Q: Why do endurance sports require a high proportion of slow-twitchmuscle fibers, whereas power sports…

A: Introduction: Examples of endurance sports including running, biking, swimming. Such sports need…

Q: To demonstrate muscle fatigue, a student held an 8 lb dumbbell in her hand and abducted her arm…

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Q: The total tension a muscle can develop depends upon two factors. What  are they?

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A: The three muscle types in the human body are skeletal, smooth, and cardiac muscle. Skeletal muscles…

Q: Using the biceps brachii as an example, describe the biochemical and mechanochemical series of…

A: The biceps brachii is a bi-articular muscle, which implies that it assists to regulate the action of…

Q: How does speed of muscle action affect the following relationships; force-velocity and force-power?

A: Muscle action : There are three types of muscle contractions i.e. concentric, isometric and…

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

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Q: Describe in details the biochemical and mechanochemical series of events that enables motor neurons…

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Q: What are the different types of summation by which the strength of muscle contraction can be…

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Q: explain why the I band and H zoneshorten during muscle contraction, while the length of theA band…

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Q: a) Describe why the first steps for a low force contraction in both muscles are smaller than the…

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Q: Which of these events occurs during the team phase, just when a muscle has been stimulated? a) Ca2…

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Q: When is every next stimulus given to cause incomplete tetanic contraction?

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

A: Motor unit recruitment can be described as the activation of additional motor units so as to fulfill…

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.