Arrange the following in statements in the order that they occur during muscle contraction: 1-10 ACh leaves the synaptic knob and enters the synaptic cleft          The action potential is carried deep into the muscle cell by T tubules       The muscle cell relaxes and lengthens        Myosin binds to and pulls on actin, resulting in muscle shortening             Calcium attaches to troponin           As calcium re-enters the sarcoplasmic reticulum, its concentration at the myofilaments decreases     Calcium is released from the sarcoplasmic reticulum        Tropomyosin rolls out of the way, exposing actin                 ACh diffuses across the synaptic cleft and attaches to protein receptors on the sarcolemma, resulting in muscle "excitation"          Na+ enters the muscle cell and K+ exits, resulting in an action potential

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

A:

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: Explain the structure and organization of muscle fascicles and the role in generating force include…

A: Bones, ligaments, muscles, tendons, etc. constitute the musculoskeletal system. The body movement is…

Q: The power stroke in muscle contraction is the: Group of answer choices product of force and velocity…

A: The cells that make up muscle have the unique capacity to shorten or contract to cause movement of…

Q: Note the color of each three types of muscle fiber: slow twitch, fast twitch oxidative and fast…

A: Slow twitch muscle fibers:  Resistant to fatigue  For sustained,smaller movements and control of…

Q: Which of the following choices best summarizes excitation-contraction coupling? A series of events…

A: Excitation contraction coupling is the process by which an electrical stimulus triggers the release…

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: 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: The endplate potential decreases with distance because

A: The end plate potential is a potential that propagates to the neighbouring patch of muscle fibre…

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: 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: 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: 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: * :Muscle troponin protein provides.22 Contraction Elasticity Extensibility None of the above

A: Troponins are a group of proteins that can be found in striated muscle. Its levels are low in the…

Q: During cross bridge cycling in skeletal muscle, force is created by the power stroke of the: actin…

A: The cross bridge cycling exhibits the shortening of muscles because of the movement of the…

Q: Match the word in the word box with the following definition this type of stretching involves…

A: Stretching is a form of activity necessary for body movement. This has various phases and forms. It…

Q: Label the structures of the myofibril model shown with overlying sarcoplasmic reticulum. Transverse…

A: Muscular system is a type of body system which is involved in contraction and relaxation so as to…

Q: Describe the major events that occur when a muscle fiber contracts. Include all chemicals,…

A: Numerous bundles which make up the skeletal muscle are called fascicles and each of these is…

Q: Discuss some of the differences, and similarities if any, of smooth muscle contraction compared to…

A: The organ system that is involved majorly in the movement of the body is known as the muscular…

Q: Describe the process of skeletal muscle contraction, beginning with an action potential in a motor…

A: Skeletal muscles are voluntarily controlled.

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: 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 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: We control muscle force using motor unit recruitment. When we recruit more motor units, what is…

A: The process of activating different motor units to achieve a specific level and kind of muscular…

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: What is NOT related to temporal summation for muscle contraction? residual Ca2+ in the muscle…

A: Temporal summation of muscle contraction can be described as a sensory summation involving the…

Q: Order the following steps of muscle contraction: Drag and drop options into correct order and…

A: The action potential is initiated and propagated through the motor neurons to finally reach the…

Q: Which among the four choices below is NOT a typically way to measure muscle strength? Maximum force…

A: The maximum force a muscle or a muscle group may exert during a contraction is known as muscular…

Q: Briefly explain the steps involved in a single muscle contraction beginning at the neuromuscular…

A: Muscles are tissues that can contract and expand. The muscles can be grouped into three types based…

Q: • Myosin pulls the actin strands • An action potential arrives at the neuromuscular junction •…

A: The muscles in the body in association with the skeleton system provide us with the desired…

Q: Arrange the steps of muscle innervation and contraction in response to touching a hot plate.…

A: Sensory neurons(afferent neurons) are defined as the type of nerve cells where they get activated…

Q: You can choose one or more than one option   About human skeletal muscle contraction, what are the…

A: Actins are the functional unit of muscles. The movement of muscles and their actions are based on…

Q: Which of the following is thought to be cause of  muscular fatigue? Decrease level of lactate…

A: Muscle fatigue is the decrease in capacity of a muscle to create power. It very well may be a…

Q: Which of the following are part of the muscle contraction process?(More than one answer may be…

A: Muscle contraction is the basis of all skeletal movements. Skeletal muscles are composed of muscle…

Q: When motor units are recruited to participate in tension development in a muscle, the order of…

A: Introduction  A motor unit consists of a motor neuron as well as all of the skeletal muscle fibres…

Q: Determine whether the following description is common to skeletal muscle, cardiac muscle or both…

A: increase in tension during contraction of the muscle organ involves recruitment of other cells 1.…

Q: Discuss the structure of a muscle fiber indicating the location of the following: epimysium,…

A: A single muscle cell makes up muscular fibers. They help the body's physical forces to be…

Q: Which type of contraction is associated with increased skeletal muscle fiber damage?…

A: Muscle contraction happens when the thin actin and thick myosin filaments slide past one another. It…

Q: ge-sensitive protein nels open and allow Acetylcholi syn elease from terminal of the SR. Ca2+ flows…

A: The skeletal muscle cells and neurons can get excited as they have a capacity to generate the action…

Q: What event occurs immediately before the movement of tropomyosin? Initiation of the power stroke…

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

Q: Skeletal muscle cell(key terms: striated, contracting proteins, contractions, nucleus location) The…

A: Muscles are tissues which helps in locomotion and movement.  They contract and relax to bring about…

Q: What are the features of contraction of the muscle shown below? Copy and complete the table below.…

A: Histology is one of the fields of biology which examines the microscopic structure of biological…

Q: Which event occurs earlier in time, as compared to the others listed, to bring about skeletal muscle…

A: Skeletal muscles show contraction when stimulated. Skeletal muscles contract with varying degrees of…

Q: Which statement or statements describe the role of calcium in the stimulation of muscle fibers?…

A: Muscles are defined as soft tissue that can undergo contraction, movement production, and maintain…

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.