What step DIRECTLY causes a sarcomere to shorten? cross- bridge formation  calcium transport into SR calcium release  power stroke myosin heads in high energy state

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: What intracellular protein of smooth muscle cells binds calcium and leads to contraction?…

A: Smooth muscles or involuntary muscles are types of muscles found in visceral organs. These…

Q: True or False? Rigor mortis is characterized by continued attachment of myosin heads to actin…

A: Even after death, in absence of oxygen the body may continue to produce ATP via anaerobic…

Q: depolarization of the transverse tubules (T-tubules) promote

A: Every cell in the body has a cell membrane which separate it from the external environment of the…

Q: Actin is sometimes called the "thick" filament. It splits ATP and is responsible for the "power…

A: The movements of different body parts are attributed to the systemic contraction and relaxation of…

Q: Looking at this diagram explain the order of size dependent recruitment of motor units during muscle…

A: Car rental refers to the performance of additional vehicles to achieve increased contraction…

Q: Elite sprinters have a high concentration of muscle fibers with the fastest cross-bridge cycling and…

A: Different kinds of muscles are present in the body, which help in locomotion and movement. These…

Q: the given below option what step causes a sarcomere to shorten? cross-bridge formation  calcium…

A: The component of a muscle fiber that contracts is called a sarcomere. Actin and myosin make up the…

Q: Calcium storing membranous network in muscle fibers Transmit the action potential to the interior of…

A: The motor neuron's axon receives an action potential.On the axon, the action potential opens…

Q: Select the correct statements regarding myosin-mediated contraction in the sarcomere. Ca2+ is…

A: Actin and myosin work together to produce muscle contractions and, therefore, movement.

Q: similar to peak bone mass: approximately 30 Similar to menopause: approximately 50 Into the 60's…

A: Muscle hypertrophy is the natural phenomenon of an increase in muscle mass. The decline in muscle…

Q: Type II (fast twitch) muscle fibers contain what properties?    Select 2 correct answer(s)…

A: Skeletal system are the major organ system of the human body that provides framework and structural…

Q: skeletal muscles:       0.Troponin has a strong affinity              for Ca2+ Creation of…

A: Muscles There are three type of muscles cell found in human Cardiac muscle cells  Smooth muscle…

Q: Smooth muscle cells lack transverse tubules. True or False True False

A: Muscles constitute a set of specialized tissues which play an important role in body movements along…

Q: In both smooth and skeletal muscle calcium must be actively transported out of the fluid surrounding…

A: As per our honor code, we are authorized to answer only one question at a moment. As you have not…

Q: complete tetanus    Has increased muscle length with no change in tension.   eccentric…

A: The contraction of the muscle generates a force called as muscle tension. There is also generation…

Q: What happens as a result of the movement of tropomyosin? O Calcium is pumped into the sarcoplasmic…

A: The sliding filament theory is proposed to explain the mechanism lying in the contraction of…

Q: During muscle contraction, what does calcium bind to in skeletal muscles? Tropomyosin O Actin Myosin…

A: Skeletal muscles are one of the major type of muscle where it works under the voluntary control of…

Q: Release of calcium from the terminal cisternae Binding of acetylcholine to the acetylcholine…

A: Adenosine triphosphate is a natural compound and hydrotrope that gives energy to drive many cycles…

Q: Match the statement on the left with the best response on the right. Breaking the high energy bond…

A: Introduction :  A synapse is a small space that represents the junction between two axon terminals…

Q: IIT Skeietal ction, calcium O increases action potential transmission along the sarcomere releases…

A: Skeletal muscle responds to the nerve impulses received by it. Contraction of muscles is the…

Q: Muscle contraction incorrect order Calcium allows myosin to bind to the actin. A message travels…

A: Note:  the question is attempted to write the correct order of muscle contraction. Muscle is the…

Q: Calcium is the trigger for contraction of all muscle types. How does its binding site differ in…

A: In the human body, there are three types of muscles, skeletal muscles, cardiac muscles, and smooth…

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…

Q: Which of the following is NOT a microscopic change associated with strength training? increased…

A: Strength training is practiced to increase the endurance of a person. To do this, an outside…

Q: Which statement or statements describe why depletion of ATP after death leads to rigor mortis?

A: Rigor mortis is the third phase of death. It is one of the unmistakable indications of death,…

Q: An INCREASE in has no direct effect on increasing tension during skeletal muscle contraction.…

A: The muscles which are attached to the bones, can contract voluntarily and are mainly involved in…

Q: In the absence of _____, a contracted skeletal muscle will not relax but will develop rigor mortis…

A: Introduction After the death of an individual, several changes take place inside the dead body. The…

Q: Embryonic myoblasts fuse to form single muscle fibers during development; thus skeletal muscle cells…

A: Embryonic stem cell is a pluripotent cell which has the ability to differentiate to all other cell…

Q: Thick and thin myofilaments have different properties. For each phrase below, indicate whether the…

A: Myofilaments are the parallel striated muscle cells or muscle fibres that constitute the fasicles…

Q: Myosin are motor proteins that drive forces and movement on actin filaments.

A: Answer:  MYOSIN = These are the proteins , found in muscle cells and primarily plays a major role in…

Q: Tropomyosin covers the active sites on actin until it is ready for myosin to bond for a muscle…

A: Introduction:- The muscular system is an organ system that connects bones, tendons, and heart…

Q: T-tubules are invaginations of the sarcolemma of a muscle cell. True or False True False

A: The skeletal muscle cell (myocyte) contains sarcoplasm surrounded by sarcolemma. It comprises…

Q: What do the calcium ions that are released into the cytoplasm during contraction bind to?…

A: At the point when the muscle is stimulated during contraction, calcium particles are delivered from…

Q: Skeletal muscle fibers regularly divide by mitosis. True False

A: Muscle tissues are are the types of tissue which have proficiency to extend  , relax , possess…

Q: arcoplasmIC hypertruphy a liml SIZE training? It adds more actin and myosin. It decreases glycogen…

A: Sarcoplasmic Hypertrophy  Cytoplasm of the muscle fiber or cell is referred as Sarcoplasm .…

Q: Contractile muscle cells cannot be created in culture.     True     False

A: Contractile muscle cell present in body as a skeletal muscle, smooth muscle and heart muscles. The…

Q: Put the steps of excitation-contraction in order: 1 Myosin "heads" pivot, cause [ Choose ] Calcium…

A: The mechanism of contraction of skeletal muscle was best explained through 'sliding filament…

Q: Why does continuouns calcium release within a muscle fiber cause greater tension? Acticates more…

A: Muscle is a soft tissue like structure which is primarily responsible for the movement in the body.…

Q: What contains troponin, is involuntary and intracellular calcium is necessary in muscle contraction?…

A: Calcium lets out from the sarcoplasmic reticulum through calcium particle channels when the membrane…

Q: Activation of the myosin head is required for contraction and uses one ATP per cross-bridge cycle.…

A: Each of the muscle fibers are made up of even smaller fibers called as myofibrils. These myofibrils…

Q: What type of action potential conduction is found on the surface of skeletal muscle cell?…

A: The two types of conduction system are: continuous conduction and saltatory conduction. The…

Q: In the structure of a sarcomere, w A-band? actin myosin

A: The basic contractile unit of muscle fiber is formed by the sarcomere. Two main protein filaments-…

Q: place in correct order 1. ACH binds to receptors

A: The muscle contraction is explained via tha Sliding Filament Theory of Huxley ans Huxley.  It talks…

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.