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    which of the following is the correct sequence of events for muscle contractions

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    Arrange the following events of muscle contraction in the sequence : (i) Generate an action potential in t

    Watch complete video answer for “Arrange the following events of muscle contraction ” of Biology Class 12th. Get FREE solutions to all questions from chapter NEET DRILL 3.

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    Question : Arrange the following events of muscle contraction in the sequence : (i) Generate an action potential in the sarcolemma (ii) Form a cross bridge (iii) Release a neurotransmitter (Acetylcholine) (iv) Release of calcium ions in sarcoplasm (v) Pulls the attached actin filaments towards the centre of "A" band (vi) Remove the masking of active sites for myosin The correct option is :-

    Answer

    Step by step video solution for "Arrange the following events of muscle contraction in the sequence :

    (i) Generate an action potential in the sarcolemma

    (ii) Form a cross bridge

    (iii) Release a neurotransmitter (Acetylcholine)

    (iv) Release of calcium ions in sarcoplasm

    (v) Pulls the attached actin filaments towards the centre of "A" band

    (vi) Remove the masking of active sites for myosin

    The correct option is :-" by Biology experts to help you in doubts & scoring excellent marks in Class 12 exams.

    Updated On: 12-03-2022

    Video Solution: Arrange the following events of muscle contraction in the sequence : (i) Generate an action potential in the sarcolemma (ii) Form a cross bridge (iii) Release a neurotransmitter (Acetylcholine) (iv) Release of calcium ions in sarcoplasm (v) Pulls the attached actin filaments towards the centre of "A" band (vi) Remove the masking of active sites for myosin The correct option is :-

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    Text Solution A i−ii−iii−iv−v−vi i-ii-iii-iv-v-vi B iii-iv-i-ii-vi-v C iii-i-iv-ii-v-vi D iii-i-iv-vi-ii-v Answer D

    Question Details till 18/03/2022

    Question

    Arrange the following events of muscle contraction in the sequence :

    (i) Generate an action potential in the sarcolemma

    (ii) Form a cross bridge

    (iii) Release a neurotransmitter (Acetylcholine)

    (iv) Release of calcium ions in sarcoplasm

    (v) Pulls the attached actin filaments towards the centre of "A" band

    (vi) Remove the masking of active sites for myosin

    The correct option is :-

    Chapter Name Neet Drill 3Subject Biology (more Questions)Class 12thType of Answer VideoQuestion Language

    In Video - English In Text - English

    Students Watched 10.0 K+Students Liked 9.4 K+Question Video Duration 3m28s

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    The steps involved in the mechanism of muscle contraction are given below.

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    Arrange the steps in proper sequential order and select the correct option. I. Release of calcium ions in the sarcoplasm. II. Signal sent by the CNS via a motor neuron. III. Binding of calcium with a subunit of troponin on actin filaments. IV. Generation of the action potential in the sarcolemma. V. Binding of myosin head to the exposed active sites on actin to form a cross-bridge. VI. Inward pulling of ‘Z’ line attached to actin causing shortening of the sarcomere. VII. Pulling of the attached actin filaments towards the centre of 'A' band. VIII. Release of neurotransmitter acetylcholine and generation of the action potential in the sarcolemma.The steps involved in the mechanism of muscle contraction are given below.

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    Arrange the steps in proper sequential order and select the correct option. I. Release of calcium ions in the sarcoplasm. II. Signal sent by the CNS via a motor neuron. III. Binding of calcium with a subunit of troponin on actin filaments. IV. Generation of the action potential in the sarcolemma. V. Binding of myosin head to the exposed active sites on actin to form a cross-bridge. VI. Inward pulling of ‘Z’ line attached to actin causing shortening of the sarcomere. VII. Pulling of the attached actin filaments towards the centre of 'A' band. VIII. Release of neurotransmitter acetylcholine and generation of the action potential in the sarcolemma.During muscle contraction, what could be the correct sequence ?

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    A. Release of calcium ions into the sarcoplasm. B. Release of Acetylcholine. C. Sliding of actin filaments over each other. D. Break down of ATP to form a cross bridge.During muscle contraction, what could be the correct sequence ?

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    A. Release of calcium ions into the sarcoplasm. B. Release of Acetylcholine. C. Sliding of actin filaments over each other. D. Break down of ATP to form a cross bridge.पेशियों के संकुचन की क्रियाविधि में नीचे दिए गए चरण शामिल हैं। उचित क्रम में चरणों को व्यवस्थित करें और सही विकल्प का चयन कीजिये।

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    1.पेशीद्रव्य में कैल्सियम आयनों का विमोचन II.एक प्रेरक तंत्रिकोशिका से CNS द्वारा संकेत भेजना III. ऐक्टिन तंतुओं पर ट्रोपोनिन की एक उपइकाई के साथ कैल्सियम का बंधन IV. सार्कोलेमा में क्रिया विभव का उत्पादन V. क्रॉस-ब्रिज बनाने के लिए एक्टिन पर प्रकट सक्रिय स्थलों से मायोसिन के शीर्ष का बंधन VI.ऐक्टिन से जुड़ी 'Z' रेखा के अंतर्मुखी खिंचाव से सार्कोमियर का छोटा होना VII. 'A' बैंड के केंद्र की ओर संलग्न ऐक्टिन तंतुओं का खिंचाव VIII. तंत्रिका संचारी ऐसिटिलकोलीन का विमोचन और सार्कोलेमा में क्रिया विभव का उत्पादन

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    The sliding filament model of contraction states that _

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    The sliding filament model of contraction states that during contraction, the thin myofilaments slide past the thick myofilaments so that actin and myosin myofilaments overlap to a greater degree. In a relaxed muscle fiber, the thick and thin myofilaments overlap only at the ends of the A band.

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    A sarcomere is the distance between two?

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    z discs

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    1/29 Created by allij133

    Terms in this set (29)

    The sliding filament model of contraction states that _

    The sliding filament model of contraction states that during contraction, the thin myofilaments slide past the thick myofilaments so that actin and myosin myofilaments overlap to a greater degree. In a relaxed muscle fiber, the thick and thin myofilaments overlap only at the ends of the A band.

    A sarcomere is the distance between two?

    z discs

    What band contains only actin filaments?

    I band

    What are the thicker filaments called?

    Myosin filaments

    Both actin and myosin are found in which band?

    A band

    Myosin filaments are located in which band

    A band

    What is the functional role of the T tubules?

    enhance cellular communication during muscle contraction

    Which of the following is the correct sequence of events for muscle contractions?

    motor neuron action potential, neurotransmitter release, muscle cell action potential, release of calcium ions from SR, ATP-driven power stroke, sliding of myofilaments

    The mechanism of contraction in smooth muscle is different from skeletal muscle in that __

    the site of Calcium binding site differs

    Part complete

    An anaerobic metabolic pathway that results in the production of two net ATPs per glucose plus two pyruvic acid molecules is _

    glycolysis

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    Choose the correct sequence of events for the mechanism of muscle contraction:I. > Increase in Ca2+ level leads to the binding of calcium with a subunit of troponin on actin filaments which results in the removal of masking of active sites for myosin.II. The 'Z' line attached to these actins are also pulled inwards thereby causing a shortening of the sarcomere. i.e., contraction.III. Neural signal reaching the motor end

    Choose the correct sequence of events for the mechanism of muscle contraction:I. > Increase in Ca2+ level leads to the binding of calcium with a subunit of troponin on actin filaments which results in the removal of masking of active sites for myosin.II. The 'Z' line attached to these actins are also pulled inwards thereby causing a shortening of the sarcomere. i.e., contraction.III. Neural signal reaching the motor end plate releases acetylcholine resulting ingeneration of action potential in sarcolemma.IV. > The attached actin filaments are pulled towards the centre of 'A' band

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    Choose the correct sequence of events for the mechanism of muscle contraction:I. Increase in Ca2+ level leads to the binding of calcium with a subunit of troponin on actin filaments which results in the removal of masking of active sites for myosin.II. The 'Z' line attached to these actins are also pulled inwards thereby causing a shortening of the sarcomere. i.e., contraction.III. Neural signal reaching the motor end plate releases acetylcholine resulting ingeneration of action potential in sarcolemma.IV. The attached actin filaments are pulled towards the centre of 'A' band

    Question

    Choose the correct sequence of events for the mechanism of muscle contraction:

    I. Increase in C a 2 +

    level leads to the binding of calcium with a subunit of troponin on actin filaments which results in the removal of masking of active sites for myosin.

    II. The 'Z' line attached to these actins are also pulled inwards thereby causing a shortening of the sarcomere. i.e., contraction.

    III. Neural signal reaching the motor end-plate releases acetylcholine resulting in generation of action potential in sarcolemma.

    IV. The attached actin filaments are pulled towards the centre of 'A' band

    A III, II, IV, I B II, III, I, IV C III, I, IV, II D II, I, III, IV Solution

    The correct option is C III, I, IV, II

    Neural signal reaching the motor end plate releases neurotransmitters (acetylcholine) resulting in generation of action potential in sarcolemma. Action potential spreads through the muscle fibre and results in the release of calcium ions into the sarcoplasm. Increase in

    Ca 2 +

    level leads to the binding of calcium with a subunit of troponin on actin filament. It results in the removal of masking of active sites for myosin. Myosin head utilises the energy from ATP hydrolysis and binds to the exposed active sites on actin to form a cross bridge. The attached actin filaments are pulled towards the centre of 'A' band. The 'Z' line attached to these actins are also pulled inwards thereby causing a shortening of the sarcomere i.e., contraction.

    Biology Suggest Corrections 0

    SIMILAR QUESTIONS

    Q. Choose the correct sequence of events in case of sliding filament theory:

    I. Acetylcholine generates an action potential in the sarcolemma

    II. F-actin binds myosin head

    III. Inflow of Na+ ions

    IV. CNS sends the command via motor neuron and the signal reaches the

    neuromuscular junction

    V. Thin filament moves inwards and reduces the length of I band

    VI. Calcium ions release into the sarcoplasm

    VII. Conformational changes in the troponin

    Biology

    Q. Select true or false

    i. Shortening of sarcomere occurs when Z lines attached to actin filaments are pushed outwards.

    ii. During contraction, I bands retain their lengths.

    iii. During contraction, A bands get reduced in length.

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