In 2013, Zach Bitter set a new record for running a 100 mile Ultra-Marathon in less than 12 hours. (Holy smokes!!!) If we were to look at the composition of his skeletal muscles (particularly in his legs), we would likely find a greater proportion of: A)Type I Fibers b)Type IIX Fibers   Creatine phosphate can supply the phosphate for conversion of ADP into ATP. The enzyme needed for this to occur is: A)creatine kinase B)creatine hydrolase C)adenylate cyclase D)adenylate phosphatase

Q: The most readily available long-term resource used to produce ATP for muscle contraction is: a)…

A: The contraction of muscle primarily depends on an energy source that is adenosine triphosphate…

Q: 23) which of the following is true about skeletal muscle?  a) they depend entirely on anaerobic…

A: Skeletal muscles are made of long, cylindrical thin cells that contain highly organised proteins and…

Q: A typical relaxed sarcomere is about 2.3 um in length and contracts to about 2 um in length. Within…

A: a) To find: The overlap of thick and thin filaments in the relaxed and contracted sarcomere

Q: 34. in an experimental study of skeletal muscle function, an isolated muscle strip is electrically…

A: Muscle tension Muscle tension interchangeably called "muscle force" is the amount of force produced…

Q: f a muscle cell had very short T-tubules, how much tension would the muscle fiber create, relative…

A: T tubules or the transverse tubules are the extensions of the cell membrane that penetrate into the…

Q: Troponin C has been mutated such that it cannot bind to calcium. Describe the effect of this…

A: Troponin C (TnC) is the metal-binding supermolecule monetary unit that initiates the sequence of…

Q: Select the best answer or answers from the choices given: During muscle contraction, ATP is provided…

A: Adenosine triphosphate (ATP) is the energy molecule that helps store and transfer the energy in the…

Q: What part of the sarcolemma contains acetylcholine receptors? A) motor end plate B) any part of the…

A: Skeletal muscles are muscles which are under voluntary control. They are also known as striated…

Q: 1. Which myosin type II property is most different from kinesin-1? A) myosin has two heads that can…

A: The actin-myosin interaction is most commonly known for its role in sliding filament theory, where…

Q: 3) Smooth muscle contraction is regulated by: a) activation (excitation) of myosin. b)…

A: Muscles are of three types: Skeletal muscle  Smooth muscle  Cardiac muscle  Smooth muscle is an…

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

A: ATP works as a cell energy currency and it helps the cell to rapidly accumulate energy and transfer…

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

A: Sarcolemma The plasma membrane of the muscle cell is called sarcoplasm and it is surrounded by he…

Q: Total force in the length:force relationship is the result of a.) ideal overlap between the myosin…

A: The length-tension relationship in muscle tissue describes the force a muscle can generate at…

Q: How is muscle contraction stopped? Which of the following is/are correct?   A) The brain stops…

A: The process of muscle contraction is a sequence of events that are responsible for the contraction…

Q: Which of the following does NOT happen when your muscles are fatigued? A) Lactic acid buildup causes…

A: The inability of a muscle to maintain force of contraction after prolonged activity is called muscle…

Q: What happens to sarcomeres when actin and myosin filaments in a muscle fiber interact during the…

A: Answer - According to the question option B is correct which says : -  sarcomeres usually get…

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

A: Sarcomere is the functional unit of striated muscle. Our skeletal muscle is made up of sacromeres .…

Q: As mentioned in class, one additional major use of ATP in skeletal muscle (besides powering the…

A: Assumptions:The volume of a single sarcomere is roughly cylindrical.The average diameter of a…

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

A: Muscle tissues are densely packed with cells and are well-vascularized; they are responsible for the…

Q: An increase in the cross sectional area of muscle is known as hypertrophy. Hypertrophy allows muscle…

A: The question given is about hypertrophy. Hypertrophy is defined as an increase in tissue mass caused…

Q: What would be affected if the globular head of myosin was misshapen? a) The ability to bind to…

A: Myosin is a protein, but specifically, a motor protein and a fibrous globulin of muscle that can…

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

A: Motor unit This unit constitutes a motor neuron and all of the skeletal muscle fibers innervated by…

Q: Put these events that occur in skeletal muscle in the correct chronological sequence: 1. Activation…

A: The membrane potential on the T-tubule membrane is sensed by a protein called the dihydropyridine…

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

A: As per BNED rule, first three questions are answered , kindly send the question that need to be…

Q: Skeletal muscle is described as striated. What are the lighter, thinner stripes noted under the…

A: The lighter, thinner stripes noted under the microscope are actin. Under a microscope, the thick and…

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

A: Motor units It consists of a motor neuron and every skeletal muscle fiber that the neuron's axon…

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

A: Smooth muscle is a type of muscle tissue that is used by various systems to apply pressure to…

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

A: In order to facilitate movement, muscles are attached to bones. They function by shortening…

Q: An explanation leading to the correct answer would be helpful! Scenario: Your friend Arnold S, who…

A: Weightlifting is a popular and effective form of resistance training that plays a pivotal role in…

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

A: The human body is made up of 4 types of essential/fundamental tissue- Nervous tissue, epithelial…

Q: A 48-year-old man has hepatic cancer that is unresponsive to standard therapy. He enrolls in a…

A: The objective of the question is to identify the most likely cause of muscle weakness in a patient…

Q: A typical relaxed sarcomere is about 2.3 µm in length and contracts to about 2 µm in length. Within…

A: In muscle fibers, sarcomeres are the basic contractile units. There are two main protein filaments…

Q: The greater the number of _________  involved in a motor unit, the ________ the degree of fine…

A: Muscle fibres control the physical forces within the body. They help facilitate the movement of…

Q: 3 2 4 5 KKK

A: The Figure 39.1 represents the sliding filament theory of skeletal muscle, which explains the…

Q: What would happen without input from gamma motor neurons? A) Information about velocity would…

A: Intrafusal fibers are specialized muscle fibers. They are found in the muscle spindles. Muscle…

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

A: skeletal muscle requires an extracellular inward calcium current to stimulate the b urst of calcium…

Q: Give typed explanation  Put the events of a single cross-bridge cycle in the proper order. Start…

A: Cross-bridge cycle explains the calcium-based interaction of actin filament and myosin during…

Q: The CrossFit workouts you and River perform consist of many bodyweight activities like pushups,…

A: Events Commenced during muscle contraction involve the following sequence- Depolarisation and…

Q: You are attempting to crystallize the head group of a myosin-like muscle protein from a newly…

A: Papain and Trypsin are enzymes very commonly used in animal tissue culture experiments to digest…

Q: Pick the right order for muscle contraction a) ATP attaches to myosin, muscle cell uses calcium,…

A: Within the muscle cell the actin and myosin interaction occurs. The acting is a cytoskeleton protein…

Q: Please answer all questions  Following death, muscles enter a period of sustained contraction…

A: Muscle twitch- It is an involuntary contraction of muscle usually caused by damage to nerve. Muscle…

Q: 1. Draw and label the steps of the sliding filament mechanism in skeletal muscle. This should be…

A: Muscle contraction is a complex process that involves the interaction of numerous molecules and…

Q: Put these events that occur in skeletal muscle in the correct chronological sequence: 1. Opening of…

A: Muscle contraction is a major phenomenon associated with the functioning of the myofibril occurring…

Q: 1. During muscle contraction, hydrolysis of ATP results in a change in the conformation of actin a…

A: Muscle contraction is a complex physiological process that enables the body to move and perform a…

Q: Select the best answer or answers from the choices given: Aerobic exercise results in all of the…

A: Aerobic workouts are important because they promote burning of fat and also improves cardiovascular…

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.