Which of the following statements is FALSE regarding skeletal muscle contraction? O a. Calcium binds troponin specifically on a calcium binding site which then leads to tropomyosin movement O b. The action potential of a motor nerve is transmitted to a muscle fibre through the neuromuscular junction which is a fusion of nerve and muscle cell membranes O c. Fine motor movement/control is a result of recruiting smaller motor units O d. Calcium is pumped into storage soon after it is released to the cytoplasm

Q: Which of the following summarizes the role of acetylcholinesterase in muscle contraction? O opens…

A: Acetylcholinesterase (AChE) is an enzyme that breaks down the neurotransmitter acetylcholine in the…

Q: n order to study and understand muscle diseases, one needs to have a good understanding of normal…

A: Muscles contract in a repeated pattern of binding and releasing between the two thin and thick…

Q: which decreases cytoplasmic calcium ion concentration The relaxation of skeletal muscle relies on…

A:

Q: /hich statement about muscle contractions is INCORRECT ? Once maximum muscle tension is achieved, no…

A: Muscle contraction occurs when actin and myosin slide past each other. The required calcium for…

Q: Muscle contraction can occur when: is it 1,2,3,4? A bands lengthen. myosin filaments shorten.…

A: Muscle is a specialized contractile tissue that is a distinguishing characteristic of animals.…

Q: In the process of muscle contraction, which of the following steps immediately precedes the sliding…

A: Muscle cells are specialized for contraction. Muscles allow for motions such as walking, and they…

Q: The Sarcolemma in skeletal muscle is OA. Equivalent to the cell membrane which covers the entire…

A: There is muscle tissue throughout the body. The muscles affixed to the skeletal system are referred…

Q: Which of the following is NOT true regarding actin? O It contains troponin and tropomyosin O It is a…

A: Among the given options, option (d) is the most appropriate. All the mentioned statements are true…

Q: Select one or more: - a. No tension can be generated. b. Both contractile and elastic forces…

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Q: Which of the following statements accurately describes the pattern of recruitment in a muscle when…

A: The contraction of muscle is responsible for the development of muscle movement. The generation of…

Q: Why might multiple, small motor units be advantageous over a single large motor unit?   A. They…

A: Motor units participate in regulation of movement of muscle fibers.

Q: Treppe increases skeletal muscle contraction strength by:

A:

Q: 3) Paula is a scientist who is developing a drug called Fremtol that will be used to treat muscle…

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Q: Even though calcium is removed from troponin and tropomyosin, please describe in detail what else…

A: The events that result in the contraction of human muscle fiber starts with the signal by a…

Q: What role (function) does calcium have within a muscle fiber? a. trigger muscle potentials along…

A: Calcium is present in the sarcoplasmic reticulum until and unless it is released by the stimulus. It…

Q: Satellite cells *         A- are muscle stem cells       B- are located between the plasma membrane…

A: Myosatellite cells, otherwise called satellite cells or muscle stem cells, are little multipotent…

Q: What happens to calcium ions when muscle contraction ends and relaxation begins? O The ions diffuse…

A: Muscle is one of the types of soft tissues present in human beings and many other animals, and these…

Q: Which of these events occurs during the lag (latent) phase of musclecontraction?a. cross-bridge…

A: Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of myosin and…

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: Know the Sliding Filament Theory & neurological events leading up to contraction. (i.e. from the…

A: The level of calcium ions in the cytoplasm is controlled by muscle contraction. Calcium ions work at…

Q: 7 I myosin heads firmly bound to actin 8. | threshold is reached and muscle action potential is…

A: A neuromuscular junction (NMJ) or myoneural junction is the one where a motor endplate of a motor…

Q: Myosin filaments iterdigitate with actin filaments in order to bring about muscle contraction.…

A: The process of muscle contraction is necessary for the normal physical activities of the body. Force…

Q: the process of muscle contraction, which of the following steps immediately precedes the influx of…

A: Muscle contraction:-  Is the response  a muscle has to any kind of stimuli where the result is…

Q: The contraction of skeletal muscle fibers is prevented by regulatory proteins located on the: O thin…

A: Muscle contraction is referred to as the tightening of the muscles present in the body of an…

Q: What is the function of calcium in muscle contractions? to bind to troponin and change its…

A: Skeletal muscles are a special type of muscles made up of contractile tissue. They are a type of…

Q: Which of the following statements about the microscopic structure of smooth muscle fibers is…

A: Muscles have a vital role in the body. Muscles do a lot for our bodies as well. They circulate blood…

Q: The release of which of the following minerals from muscle cell storage sites stimulates muscle…

A: Sarcoma muscles store calcium in sarcoplasmic reticulum. It gets released when a muscle cell or…

Q: Considering the force of contraction of a skeletal muscle fiber,wave summation occurs because ofa.…

A: Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of myosin and…

Q: For relaxation to occur, A. calcium leaves the sarcoplasmic reticulum, and troponin binds calcium…

A: The muscle contraction and relaxation are regulated by the concentration of calcium ions released…

Q: Select ALL that would INCREASE the strength of a muscle contraction: recruiting more slow-twitch…

A: Skeletal muscle cells are long and cylindrical, has voluntary control in action that is in under our…

Q: The decrease in active force that occurs at lengths longer than the optimal length is caused by: O…

A: According to the question, the decrease in active force that occurs at lengths longer than the…

Q: Muscle spindles :-a- are found in all skeletal musclesb- are found only in large skeletal musclesc-…

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Q: 21. Summarize the events that occur during the Excluation-Contraction Coupling Phase in a skeletal…

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Q: Which of the following does NOT contribute to muscle fatigue? A. K+ accumulation B. ADP and…

A: Introduction Muscle fatigue is a condition in which muscles loses the ability to perform overtime.…

Q: During sarcomere contraction, Select one: Oa. Calcium, troponin Ob. Calcium, microfilaments O c.…

A: The answer is option A- calcium, troponin

Q: All the following are necessary for a skeletal muscle cell to full relax, except one. Which answer…

A: Muscle is a delicate tissue found in many creatures. Muscle cells contain protein fibers of actin…

Q: Tetanus is a phenomenon where muscle fibers are continuously contracted. What best explains this?…

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Q: Fast oxidative glycolytic fibers in skeletal muscle are used Select one: O a. intermittently, for…

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Q: Which of the following summarizes the role of calcium in muscle contraction? opens the binding sites…

A: The actin's active-binding sites are made visible by calcium ions attaching to the protein complex…

Q: Which of the following is the site of calcium ion storage within muscles? a. T tubules b.…

A: Muscles are the body tissues that are principally accountable for causing movement in the body.…

Q: Each of the pairs of phrases below describe steps during skeletal muscie contraction. The 2nd phrase…

A: Muscle tissue is a type of tissue which contain actin , Troponin and myosin proteins so as to allow…