The calcium binding protein in muscle is called:ActinO Troponin CTropomyosinO Myosin

Actin protein: It is found both in cytoplasm and in cell nucleus. Actin is highly abundant…

Answered: ne calcium binding protein in muscle is…

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ne calcium binding protein in muscle is called:

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter6: The Muscular System

Section: Chapter Questions

Problem 3SQ

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Concept explainers

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.

Question

The calcium binding protein in muscle is called:
Actin
O Troponin C
Tropomyosin
O Myosin

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Figure 38.37 Which of the following statements about muscle contraction is true? The power stroke occurs when ATP is hydrolyzed to ADP and phosphate. The power stroke occurs when ADP and phosphate dissociate from the myosin head. The power stroke occurs when ADP and phosphate dissociate from the actin active site. The power stroke occurs when Ca2+ binds the calcium head.
The _____ is the basic unit of muscle contraction. a. myofibril b. sarcomere c. muscle fiber d. myosin filament
Nerve impulses first stimulate a skeletal muscle fiber at _______. a. T tubules b. sarcomeres c. neuromuscular junctions d. actin binding sites
Depolarization of the sarcolemma means ________. the inside of the membrane has become Less negative as sodium ions accumulate the outside of the membrane has become less negative as sodium ions accumulate the inside of the membrane has become more negative as sodium ions accumulate the sarcolemma has completely lost any electrical charge
Any abnormal condition of skeletal muscles is known as _______________________.
A band of fibers that holds structures together abnormally is a/an______________. These bands can form as the result of an injury or surgery. adhesion aponeurosis atrophy contracture
In the diagram below, label the fine structure of a muscle, down to one of its myofibrils. Identify the basic unit of contraction in a myofibril.
Tetanus is a phenomenon where muscle fibers are continuously contracted. What best explains this? Large action potentials on the sarcolemma Increase in acetylcholinesterase increase in the lag phase Increase in calcium pump activity Calcium remains elevated in the sarcoplasm
The region of the muscle fiber involved in a neuromuscular junction is called the: Group of answer choices Voltage-gated ion channels Synaptic end bulb Synaptic cleft Motor end plate Synaptic vesicle
Which of the following does not occur during the excitation contraction coupling of skeletal muscle? Opening of ryanodine receptor calcium channels Calcium binding to troponin Tropomyosin shifting away from myosin binding sites on the actin An end plate potential
What is associated with the formation of a cross-bridge in skeletal muscle? ADP release from myosin ATP binding to myosin ATP hydrolysis Phosphate release from myosin Acetylcholinesterase
Which of the following summarizes the role of calcium in muscle contraction? opens the binding sites for cross bridge activity neurotransmitter that initiates the motor impulse for a contraction to occur restabilizes the ion concentration for sustained contractions