The neurotransmitter released by the motor neuron and responsible for electrically exciting the muscle fiber is,

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: 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: 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: Which is the order of glycolytic capacity between these muscle fiber types O I> lla > Ilx O Ix > la…

A: The contraction of the muscle fibre is explained by the muscle contraction theory by the 2 muscle…

Q: A motor unit is site of  interaction between a motor neuron and the muscle fiber that it is…

A: Neurons are the specialized cells of the nervous system and are the basic functional unit of the…

Q: Name the system that provides a ready supply of phosphocreatine to muscle cells and describe where…

A: Phosphocreatine It is also known as creatine phosphate. It is a phosphorylated form of creatine…

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: A skeletal muscle can often maintain a moderate level of active tension for long periods of time,…

A: A neuromuscular junction also called the myoneural junction is a chemical synapse between the motor…

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: Describe the microscopic structure of a muscle fiber

A: Each muscle is made out of various muscle fibers. Each muscle fiber is made out of multinucleated,…

Q: Which of these is the proper sequence of these events of muscle contraction 1) Action potential…

A: Based on option, the correct order is 1, 3, 4 and 2. Steps in initiating contraction: Whenever…

Q: describe the events that lead to muscle contraction starting at the level of the neuromuscular…

A: Muscle contraction occurs when these are initiated by a nerve signal. This is triggered by…

Q: Describe the effect of adding salts then ATP, ATP and then salts, and addition of ATP and salts…

A: Glycerianted muscle is the muscle in which calcium ion is not required of its contraction  The…

Q: The motor unit firing patterns are measured in a human hand muscle using an electromyography (EMG)…

A: The EMG pattern observed as the individual voluntarily attempts to make a low-level force of…

Q: Fast twitch muscle fibers have lower force production than slow twitch.     True   False

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

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: Describe the relationship between the resting muscle length and the strength of its contraction.…

A: Individual muscle fibers that make up skeletal muscles contract when a motor neuron stimulates them.…

Q: If a single twitch of a skeletal muscle fiber lasts 40 msec, what action potential stimulation…

A: In human physiology, skeletal muscle is defined as the vital organ of muscular system which is also…

Q: A (low or high frequency) of action potentials results in the fusion of muscle twitches to produce…

A: A muscle twitch is defined as the involuntary contraction of the muscle fibers. Muscle fibers are…

Q: true or fasle :  Eccentric muscle contractions at a constant velocity are be considered isokinetic.…

A: Concentric refers to a muscle that shortens under tension. Eccentric refers to a muscle that…

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: Describe the sequence of events that occurs when an action potential arrives at a muscle fiber’s…

A: When the action potential arrives at the end of motor neurons, it excites the skeletal muscles to…

Q: Describe in details the biochemical and mechanochemical series of events that enables motor neurons…

A: Muscle contraction means activation of tension-generating sites within our muscle cells and the…

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: active muscle tension begins at approximately one hundred percent of resting length for a muscle…

A: Muscle tension is the condition where muscles of the body remain semi-contracted for a lengthy…

Q: A smooth, sustained contraction from rapid stimulation of skeletal muscle fibers is called

A: TISSUE: These tissues differ from others in that they have the ability to contract and relax, which…

Q: A motor unit associated with the stimulation of skeletal muscle is designated as a 1:8 motor unit.…

A: A motor unit is made up of a motor neuron and the skeletal muscle fibres innervated by that motor…

Q: Which of the following step(s) about the excitation of skeletal muscle is/are incorrect?   1.…

A: Muscle contraction is an example of a complex biological process. The excitation of skeletal muscle…

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: Match the following regarding muscle contractions: The final chemical messenger and "trigger" for…

A: The neuron is the part of nervous system. It is responsible for transmitting the message in the form…

Q: What factors contribute to the amount of tensionproduced in an individual muscle fiber?

A: The amount of tension produced in an individual muscle fiber depends on the cross-sectional area of…

Q: The type of muscle contraction where the muscle contracts but exhibits no change in length is called

A: The muscle contraction is the classic example of actin-myocin interaction that are present within…

Q: Explain the requirements for Ca2+ and ATP in muscle contraction and relaxation.  Remember that…

A: A sarcomere is the basic contractile unit of muscle fiber. it has two protein filaments  1. actin 2.…

Q: When utilizing microprocessor technology for testing muscle strength, you are typically looking at…

A: Answer - Isometric

Q: Muscle fiber contraction and nerve impulse conduction are similar in that both are response.

A: We can say that Muscle fiber contraction takes place when a muscle fiber is signaled by the brain…

Q: Ca2+ does not play a role in muscle relaxation true or false

A: The muscle contraction occurs due to the introduction between active and Mauritius in filaments in…

Q: Describe how each of the following factors influences motor unit recruitment: a) Increasing…

A: Motor unit recruitment can be described as the activation of additional motor units so as to fulfill…

Q: b. Gardiac Smooth C. 2. Put the following steps of muscle contraction in order: a. b. C. d. The…

A: The muscle is made up of muscular tissues that consist of muscle fibers specialized for contraction.…

Q: Describe and explain the sliding filament model of contraction. Be sure to include in your response…

A: The fundamental contractile unit of muscle fiber is called a sarcomere. Actin and myosin, the two…

Q: Discuss the similarities and differences by which Ca2+ activity is involved in initiating muscle…

A: "Muscles" perform various functions as movement, which is the fundamental purpose of muscles is to…

Q: Muscle fiber types can be changed (e.g., Type I turns into Type II) depending on the type and…

A: The muscular system is formed by the muscles of the body that are soft tissues and are accountable…