Why does continuous calcium release within a muscle fiber cause greater tension?OActivates more calcium pumpsO Activates myofibrils continuouslyIncreases action potential frequencyLengthens sarcomereO Calcium makes the muscle fiber an offer it can't refuse

Maximal tension in muscle happens when thick and thin fibers crossover greater extent inside a…

Answered: Why does continuous calcium release…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Compared to skeletal muscle, smooth muscle None of the choices are correct Has equal thick and thin filaments Uses calcium from the extracellular fluid only Has the same contractile and regulatory proteins. Has much more thick filaments than thin filaments
After the power-stroke, the myosin heads must bind ______ in order to release actin. The muscles become very stiff (known as rigor mortis) after death because the cells run out of _____. " A calcium; calcium B troponin; troponin C tropomyosin; tropomyosin D sodium; sodium E ATP; ATP
The functional unit of a muscle fiber is the, a segment from one Z disc to thenext.a. myofibrilb. I bandc. sarcomered. neuromuscular junctione. striation
Calcium initiates smooth muscle contraction by leading to the phosphorylation of calcium channels leading to the phosphorylation of myosin • activating myosin light chain phosphatase removing tropomyosin from actin
The sarcoplasmic reticulum is the primary storage site for Ca ion used to induced muscle contraction True O False
Which of the following does NOT limit normal clot growth to the sight of injury? O A) Removal and dilution of clotting factors O B) Fibrin binding to thrombin O C) Antithrombin III D) Exposed collagen fibers O E) Serotonin
What is the effect of acetylcholine on skeletal muscle cells? Osalivary secretion food digestion decreased contraction rate O force generation parasympathetic regulation ◄ Previous Lact checked at
Explain why it’s correct
How do whole muscles contracts harder with a larger stimulus? O Increase in muscle tone O Increase in muscle hyperplasia OIncrease in motor unit activation 券 )Increase in motor end plates
How would ine generate more muscle tension to pick up something heavy? Increase activation of motor units Increase muscle tone Decrease calcium release Decrease muscle hypertrophy Decrease muscle hyperplasia
Hydrolysis of ATP to ADP+P; causes the dissociation of actin from the Myosin head and is called these two stages result in myosin movement along the actin filaments. O Head cocking; treadmilling O Head cocking: power stroke O Power stroke; head cocking Power stroke; treadmilling while the release of P₁ that leads to re-coiling of the myosin head is called Together,
Arrange the steps in the correct order to explain how a muscle fiber contracts. Myosin and actin proteinfilaments attach to eachother. Calcium ions release intothe myofibrils. Myosin filaments pull onthe actin filaments. The nerve impulse reachesthe neuromuscularjunction. The motor neuron carriesthe nerve impulse. The sarcomere shortens.

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Why does continuous calcium release within a muscle fiber cause greater tension? O Activates more calcium pumps O Activates myofibrils continuously O Increases action potential frequency O Lengthens sarcomere O Calcium makes the muscle fiber an offer it can't refuse