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Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction:

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Important Questions on Locomotion and Movement

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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-4>Q 27
Osteoporosis, an age-related disease of skeletal system, may occur due to
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-4>Q 28
Out of 'X' ' pairs of ribs in humans, only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation:
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-4>Q 29
The pivot joint between atlas and axis is a type of:
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-4>Q 30
Calcium is important in skeletal muscle contraction because it
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-4>Q 31
A cricket player is fast chasing a ball on the field. Which one of the following groups of bones are directly contributing in this movement?
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-4>Q 32
The contraction of the muscle continues in sliding filament theory
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-4>Q 33
Which of the following is correct about the given figure?
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-5>Q 1
Cross bridges between actin and myosin is broken up by-