During the cross-bridge cycle of muscle contraction, what is the role of troponin? it changes shape in the presence of Ca++ it covers the cross-bridge formation sites on the thin filament none of the answer choices is correct it covers the cross-bridge formation sites on the thick filament

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: Given these events:(1) Acetylcholine is broken down into acetic acid and choline.(2) Acetylcholine…

A: Neurotransmitters are chemicals secreted by neurons that carry information from one neuron to the…

Q: Muscle fibers that have a high number of mitochondria, contain largeamounts of myoglobin, and…

A: BASIC INFORMATION  MUSCLE It is a type of soft tissue which are found in most of the animals. The…

Q: In relaxed muscle, the myosin-binding site on adin is blocked by ?

A: Step 1 Contractile elements of muscle fibre are myofibrils. They are made up of contractile units…

Q: Motor neurons innervate muscle fibers at specialized synapses called_______ . The release of…

A: In “motor neurons”, the cell bodies are located in the spinal cord, motor cortex, or brainstem. The…

Q: Arrange the steps of muscle contraction in the correct order Myosin head forms cross bridge with…

A: Tissue comprises structurally and functionally similar cells. It is a level of organization in…

Q: Myosin ATPase activity rotates the myosin head to the strained, cocked position is associated with…

A: Myosin ATPase activity is positively related with muscle contraction. Therefore, the quantity of…

Q: Acetylcholine is necessary for the depolarization of skeletal muscle cells. Which of the following…

A: * Acetylcholine is an chemical that functions in brain and body as  neurotransmitter.  *It is an…

Q: Calcium ions are responsible for unmasking of active site on which protein for cross bridge activity…

A: The muscle fibers contain sarcomeres that are the structural units responsible for muscle…

Q: Briefly describe why contraction of the muscle cell is called “sliding filament theory” (what is…

A: During skeletal muscle contraction, a motor neuron stimulates the skeletal muscle fibers. The…

Q: A muscle has a limit to how much it can contract, based on the limit of contraction of each…

A: The study of the human body can be divided into anatomy and physiology. The anatomy studies about…

Q: The functional unit of skeletal muscle is the sarcomere area between two Z lines and sarcomere area…

A: Skeletal muscles are also known as striated muscles as they are striped or striated. It is a…

Q: The following list of events take place during a muscle contraction.  Place the events in…

A: Muscle contraction is tension generating site activation within the muscle fibers. The muscle…

Q: Based on your understanding of skeletal muscle fiber physiology, which of the following processes is…

A: ATP is the adenine tri phosphate and is the instant source of energy .It is used in many of the…

Q: In an isometric contraction the muscle develops tension but does not - exhibit elasticity does not…

A: * there are three types of muscle contractions present  are:  Concentric  Eccentric Isometric…

Q: Which of the following is arranged in order from smallest tolargest?a. Motor unit < sarcomere…

A: When a nerve impulse travel to the muscle contraction that is an action potential causes the muscles…

Q: In the process called "excitation-contraction coupling" (the events that lead up to a muscle cell's…

A: When an organism is dead, there occurs stiffening of muscles. This is termed as Rigor mortis. This…

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: explain muscle contraction in several distinct steps starting the release of acetylcholine junction

A: Muscle contraction occurs when the tension generating regions are activated within the muscle…

Q: The ability of a muscle to generate tension immediately after stimulation is dependent on: a. myosin…

A: Muscle contraction is the enactment of tension-creating sites inside muscle strands. In physiology,…

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: place the events that occur during muscle contraction and relaxation in their proper order.  Insert…

A: Anatomy and physiology are the branches of biology, anatomy deals with the study of the structure of…

Q: What is the main role of the sarcoplasmic reticulum in muscle contraction? produce calcium store…

A: The sarcoplasmic reticulum (SR), which is comparable to the smooth endoplasmic reticulum in other…

Q: what are the events that initiate muscle contraction in order?  start with the neurotransmitter…

A: A Muscle Contraction Is Triggered When an Action Potential Travels Along the Nerves to the Muscles.

Q: Which of these events occurs during the team phase, just when a muscle has been stimulated? a) Ca2…

A: Muscle stimulation The muscle contraction is stimulated by the action potential that traveled along…

Q: 3.4. About human skeletal muscle contraction, what are the correct statements? PHYSIOLOGY_basic…

A: Skeletal muscle contraction starts at the neuromuscular junction, which is the synapse between a…

Q: After nervous stimulation stops, what prevents acetylcholine in the synaptic cleft from continuing…

A: Hello! Since you have posted multiple questions, we are answering only first questions. If you need…

Q: Which of the following does not occur during the excitation contraction coupling of skeletal muscle?…

A: Excitation contraction coupling of skeletal muscle is the connection between electrical action…

Q: Which of the following is true when a muscle is at rest: calcium ions bind to the troponin complex…

A: Muscle contraction is the activation of tension-generating sites within muscle cells.

Q: ATP is needed during which of the following phases of a muscle twitch? relaxation period latent…

A: A muscle twitch is an uncontrollable contraction of the muscle fibres. Muscle fibres are controlled…

Q: Summed twitches create a greater amount of tension in skeletal muscle cells because NOTE: select all…

A: A muscle twitch is a condition in which the muscles in our body involuntary contracts that are…

Q: Acetylcholinesterase is the enzyme that breaks down and inactivates acetylcholine. Some nerve gases…

A: Nerve gas binds to acetylcholinesterase enzyme but only at 1 site. Nerve gas has a phosphorus group…

Q: Arrange the following in statements in the order that they occur during muscle contraction: 1-10…

A: Muscle contraction is the activation of tension-generating sites within muscle fibers. It does not…

Q: Skeletal muscle cells have the ability to do all of the following EXCEPT _____.     activating…

A: Skeletal muscle is a type of three major muscle types, the others being cardiac muscle and smooth…

Q: Explain the sliding filament theory of muscle contraction, including the following parts; thich…

A: Muscle contraction is the mechanism of generation of tension in the muscle fibers. The contraction…

Q: Which of the following would NOT occur as a result of regular exercise to a specific muscle group…

A: The exercising involves the training of muscles by putting heavy load on them, due to exercising the…

Q: During which step of a muscle contraction cycle is ATP needed? when myosin head does a power stroke…

A: Muscle contraction occurs when tension is generated in the muscle fibers. It occurs due to the…

Q: "When a muscle develops increased tension, but does not shorten, it is said to exhibit" isotonic…

A: Muscle contraction It is defined as the tightening, shortening, or lengthening of muscles during the…

Q: Which of the following regions of a sarcomere does not change length during a contraction because it…

A: Skeletal muscles are voluntary muscles. The contraction and relaxation in the skeletal muscle enable…

Q: Which of these statements are TRUE regarding fast-twitch fibers? S1 = Fast-twitch fibers contract…

A: Skeletal muscle fibres come in two varieties: 1. slow-twitch and 2. fast-twitch. Fast-twitch muscle…

Q: In a resting (non-contracting) muscle, what is the position of myosin? It is attached to the…

A: Skeletal system that present in our body is responsible for our movement and locomotion. That's why…

Q: What is the difference between treppe and tetany? Mark ALL that apply. there is no summation in…

A: Treppe is a muscle contraction in which the graduated series increased in vigorous contractions when…

Q: What is the steps in the Sliding Filament theory of muscle cell contraction in correct order?…

A: Muscles play an important role in the movement, locomotion, contraction, digestion, etc. Muscles are…

Q: What does constant stimulation of a muscle fiber cause? O Decreased tension Constant tension…

A: The impulse from a connected neuron stimulates the muscle cells. Muscles are contractile tissue that…

Q: Which of the following does NOT describe treppe? It is also referred to as the "staircase" effect.…

A: The muscular system is the set of muscles that are present in the body adhered to the skeletal…

Q: If acetylcholine re-uptake is blocked in the synaptic cleft, then what happens in the muscle cell?…

A: "Muscle contraction" is responsible for every movement in our bodies and may be found in every…

Q: Which of the following statements is/are TRUE regarding control of muscle? S1= A twitch results from…

A: Here i discuss about the muscles control.

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