03. Mechanism of Muscle Contraction
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Locomotion and Movement

238276 State the condition of muscle contraction in following diagram.

1 Resting potential
2 Contraction
3 Maximally contracted
4 None
GUJCET-2015
Locomotion and Movement

238282 What is sarcomere :-

1 Part between two \(\mathrm{H}\)-line
2 Part between two A-line
3 Part between two I-band
4 Part between two Z-line
AIPMT-2001
Locomotion and Movement

238307 Assertion: The portion of the myofibril between two successive ' \(Z\) ' lines is considered as the functional unit of contraction called sarcomere
Reason: During contraction, 'I' bands get reduced whereas ' \(A\) ' bands retain the length, thereby causing shortening of the sarcomere

1 Assertion and reason are true and reason is correct explanation of assertion
2 Assertion and reason are true but reason is not correct explanation of assertion
3 Assertion is true and reason is false
4 Both assertion and reason are false
AP EAMCET-24.09.2020 Shift-I
Locomotion and Movement

238297 Which of the following is correct about the given figure?

1 The length of the thick and thin myofilaments has changed.
2 Length of both anisotropic and isotropic band has changed.
3 The myosin cross-bridges move on the surface of actin and the thin and thick myofilaments slide pass each other.
4 Length of the sarcomere remains same.
AIIMS-2010
Locomotion and Movement

238289 Sarcomere is the distance between

1 A and I-bands
2 two I-bands
3 two Z-lines
4 Z and A bands
CMC Ludhiana-2010
NEET DIGITAL LIBRARY
Locomotion and Movement

238276 State the condition of muscle contraction in following diagram.

1 Resting potential
2 Contraction
3 Maximally contracted
4 None
GUJCET-2015
Locomotion and Movement

238282 What is sarcomere :-

1 Part between two \(\mathrm{H}\)-line
2 Part between two A-line
3 Part between two I-band
4 Part between two Z-line
AIPMT-2001
Locomotion and Movement

238307 Assertion: The portion of the myofibril between two successive ' \(Z\) ' lines is considered as the functional unit of contraction called sarcomere
Reason: During contraction, 'I' bands get reduced whereas ' \(A\) ' bands retain the length, thereby causing shortening of the sarcomere

1 Assertion and reason are true and reason is correct explanation of assertion
2 Assertion and reason are true but reason is not correct explanation of assertion
3 Assertion is true and reason is false
4 Both assertion and reason are false
AP EAMCET-24.09.2020 Shift-I
Locomotion and Movement

238297 Which of the following is correct about the given figure?

1 The length of the thick and thin myofilaments has changed.
2 Length of both anisotropic and isotropic band has changed.
3 The myosin cross-bridges move on the surface of actin and the thin and thick myofilaments slide pass each other.
4 Length of the sarcomere remains same.
AIIMS-2010
Locomotion and Movement

238289 Sarcomere is the distance between

1 A and I-bands
2 two I-bands
3 two Z-lines
4 Z and A bands
CMC Ludhiana-2010
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Locomotion and Movement

238276 State the condition of muscle contraction in following diagram.

1 Resting potential
2 Contraction
3 Maximally contracted
4 None
GUJCET-2015
Locomotion and Movement

238282 What is sarcomere :-

1 Part between two \(\mathrm{H}\)-line
2 Part between two A-line
3 Part between two I-band
4 Part between two Z-line
AIPMT-2001
Locomotion and Movement

238307 Assertion: The portion of the myofibril between two successive ' \(Z\) ' lines is considered as the functional unit of contraction called sarcomere
Reason: During contraction, 'I' bands get reduced whereas ' \(A\) ' bands retain the length, thereby causing shortening of the sarcomere

1 Assertion and reason are true and reason is correct explanation of assertion
2 Assertion and reason are true but reason is not correct explanation of assertion
3 Assertion is true and reason is false
4 Both assertion and reason are false
AP EAMCET-24.09.2020 Shift-I
Locomotion and Movement

238297 Which of the following is correct about the given figure?

1 The length of the thick and thin myofilaments has changed.
2 Length of both anisotropic and isotropic band has changed.
3 The myosin cross-bridges move on the surface of actin and the thin and thick myofilaments slide pass each other.
4 Length of the sarcomere remains same.
AIIMS-2010
Locomotion and Movement

238289 Sarcomere is the distance between

1 A and I-bands
2 two I-bands
3 two Z-lines
4 Z and A bands
CMC Ludhiana-2010
For More Updates join with Us
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Locomotion and Movement

238276 State the condition of muscle contraction in following diagram.

1 Resting potential
2 Contraction
3 Maximally contracted
4 None
GUJCET-2015
Locomotion and Movement

238282 What is sarcomere :-

1 Part between two \(\mathrm{H}\)-line
2 Part between two A-line
3 Part between two I-band
4 Part between two Z-line
AIPMT-2001
Locomotion and Movement

238307 Assertion: The portion of the myofibril between two successive ' \(Z\) ' lines is considered as the functional unit of contraction called sarcomere
Reason: During contraction, 'I' bands get reduced whereas ' \(A\) ' bands retain the length, thereby causing shortening of the sarcomere

1 Assertion and reason are true and reason is correct explanation of assertion
2 Assertion and reason are true but reason is not correct explanation of assertion
3 Assertion is true and reason is false
4 Both assertion and reason are false
AP EAMCET-24.09.2020 Shift-I
Locomotion and Movement

238297 Which of the following is correct about the given figure?

1 The length of the thick and thin myofilaments has changed.
2 Length of both anisotropic and isotropic band has changed.
3 The myosin cross-bridges move on the surface of actin and the thin and thick myofilaments slide pass each other.
4 Length of the sarcomere remains same.
AIIMS-2010
Locomotion and Movement

238289 Sarcomere is the distance between

1 A and I-bands
2 two I-bands
3 two Z-lines
4 Z and A bands
CMC Ludhiana-2010
NEET DIGITAL LIBRARY
Locomotion and Movement

238276 State the condition of muscle contraction in following diagram.

1 Resting potential
2 Contraction
3 Maximally contracted
4 None
GUJCET-2015
Locomotion and Movement

238282 What is sarcomere :-

1 Part between two \(\mathrm{H}\)-line
2 Part between two A-line
3 Part between two I-band
4 Part between two Z-line
AIPMT-2001
Locomotion and Movement

238307 Assertion: The portion of the myofibril between two successive ' \(Z\) ' lines is considered as the functional unit of contraction called sarcomere
Reason: During contraction, 'I' bands get reduced whereas ' \(A\) ' bands retain the length, thereby causing shortening of the sarcomere

1 Assertion and reason are true and reason is correct explanation of assertion
2 Assertion and reason are true but reason is not correct explanation of assertion
3 Assertion is true and reason is false
4 Both assertion and reason are false
AP EAMCET-24.09.2020 Shift-I
Locomotion and Movement

238297 Which of the following is correct about the given figure?

1 The length of the thick and thin myofilaments has changed.
2 Length of both anisotropic and isotropic band has changed.
3 The myosin cross-bridges move on the surface of actin and the thin and thick myofilaments slide pass each other.
4 Length of the sarcomere remains same.
AIIMS-2010
Locomotion and Movement

238289 Sarcomere is the distance between

1 A and I-bands
2 two I-bands
3 two Z-lines
4 Z and A bands
CMC Ludhiana-2010