Which of these statements is true about leg muscle fibers from an Olympic sprinter versus an Olympic marathon runner? a. The speed of muscle contraction is similar. b. The amount of force generated by similar-sized muscle fibers is similar. c. The power generated by individual muscle fibers is similar. d. The predominant leg muscle fiber types are similar.

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: What is the role of ATP in muscle function? a. ATP provides energy that enables myosin to form cross…

A: ATP stands for adenosine triphosphate. It is an energy coin of the cell. It is produced in the…

Q: When skeletal muscle fibers are damaged and die, they may be replaced with dense irregular…

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Q: Which arrangement best describes a bipennate muscle?a. The muscle fibers feed in on an angle to a…

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Q: Muscle Fiber Recruitment As intensity increases, in which order are fibers recruited? a. type llx,…

A: Human skeletal muscle is composed of a different collection of muscle fiber types. This range of…

Q: Calcium plays a crucial role in the contraction of skeletal muscles. i. Where is calcium stored…

A: The sliding filament theory was proposed as an explanation for muscle contraction. It is based on…

Q: When a skeletal muscle cell contracts and the muscle shortens,

A: During muscle contraction, some myosin heads bind to actin (forming crossbridges) while others…

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: Which of the following effects result(s) from aging on the muscular system? a. Muscle mass declines.…

A: The muscular system is defined as an organ system composed of skeletal muscles, smooth muscles, and…

Q: Which item is biggest? A. myosin head B. myofibril C. troponin D. sarcomere

A: Muscles are compact structures made up of highly tensile , strong, long, multinucleated cells called…

Q: Which of the following statements about movement and locomotion isfalse?a. Terrestrial animals and…

A: The process called movement is the temporary or permanent displacement of the part of the body of a…

Q: During a single muscle twitch, the sarcomeres within a muscle contract maximally. How can you…

A: A contraction of muscle fibers generate when an action potential pass down the motor neurons. A…

Q: What is the first and most direct energy source for muscle con￾traction? a. glucose b. ATP c.…

A: Answer- The muscle contraction is the crutial step in the movement and locomotion.

Q: Movement of a limb in two directions requires a pair of muscles becausea. a single muscle can only…

A: Bones are the rigid, living tissue that forms the main component of the skeletal system. The bones,…

Q: When we increased the frequency, why could we see an in increase in the force of contraction? Is it…

A: An action potential can be defined as a rapid increase and decrease in the membrane potential of the…

Q: Within the first few seconds of a 5-minute race, stored ATP isdepleted. How do muscles obtain energy…

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Q: Botulism toxin inhibits the release of acetylcholine at the neuromuscular junctions. What effect…

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Q: Which of the following statements is True?a. Tendons contract using the sliding filament…

A: The muscular-skeletal system made up of tendons, ligaments, bones, muscles of various types. The…

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

A: Ans - the correct answer for the above question is- A) Different motor units were contracting while…

Q: Which statement is accurate about an agonist? a. It opposes the function of the prime mover. b. It…

A: The majority of the animals consist of soft tissue called muscles. They are responsible for…

Q: a. Individual organ a. myofibril b. An individual cel b. muscle c. A bundle of proteins c. fascicle…

A: Introduction: Skeletal muscles are voluntary muscles as their relaxation and contraction are under…

Q: Which of the following is true?   A. Muscle fibers either will contract with all the force…

A: Introduction: Muscles are the soft tissues present in all mammals. The muscle cells comprise protein…

Q: Which contractile result of rate coding will produce the most force? a. twitch b. summation c.…

A: Muscle is highly specialized tissue which plays a very important role in body movements along with…

Q: The plasma membrane of a skeletal muscle fiber is called thea. sarcoplasmic reticulum.b.…

A: Skeletal muscles are involved in movement. Contraction of skeletal muscles makes movement possible.…

Q: A skeletal muscle motor unit   A.Is the number of muscle cells innervated by one motor neuron. B.Is…

A: The skeletal system consists of bones and muscle fibres. These muscle fibres help in contracting and…

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: When sarcomeres contract during muscle contraction, which of the following occurs?   A. The myosin…

A: Sarcomeres contract during muscle contraction.

Q: Muscle Fiber Recruitment As intensity increases, in which order are fibers recruited? a. type llx,…

A: We can say that Human skeletal muscle is composed of a different collection of muscle fiber types.…

Q: What type of muscle performs an anchoring function by holding a bone in place? a. antagonist b.…

A: There are various ways in which a muscle is involved in an action. They are namely Agonist,…

Q: What happens in a muscle twitch? a. Myosin grabs a thick myofilament. b. Sarcomeres shorten during…

A: Muscle twitches can occur for heaps of reasons like stress, an excess of caffeine, a horrible eating…

Q: Give typing answer with explanation and conclusion to all parts How does BMI and muscle size affect…

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Q: What structure on a muscle fiber is composed of largely two varieties of contractile proteins--actin…

A: Muscle fibre is a single muscle cell. These muscles help control our bodily movement.

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: Which of the following is true concerning the role of Calcium in the contraction of muscle- cells?…

A: A muscle is a smooth tissue in animals. On the basis of structure, contractile properties and…

Q: The series-elastic component of muscle contraction is responsible for a.increased muscle shortening…

A: Muscle is a delicate tissue found in many creatures, and is one of the four fundamental creature…

Q: What type of motor neuron stimulates skeletal muscle fibers to contract by the…

A: Electrochemical action in skeletal muscle fibers causes myofilament movement. Excitation-contraction…

Q: During which phase of the crossbridge cycle is ATP split into ADP and Pi? A. Immediately preceding…

A: Cross bridge cycling refers specifically to the action of the cross-bridge, that being the head and…

Q: During which phase of a twitch in a muscle fiber istension the greatest?a. resting phaseb.…

A: The phenomenon of lifting or moving an object (load) involves the sarcomeres present in the muscle…

Q: What might happen if skeletal muscle lacked tropomyosin?   A. The striation pattern would…

A: Myogenesis is the process of formation of muscles from the mesodermal layer of embryonic germ cells.…

Q: contraction occurs as the length of the muscle increases. O a. Concentric O b. Eccentric O c. Static…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Identtidy which among the list represents the hierarchy of muscle structure from the largest unit to…

A: Muscles are connected to bones by means of tendons. They contract to produce movement and thus help…