Muscle Contraction and Relaxation

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Muscle Contraction and Relaxation: Overview

This topic covers concepts such as mechanism of muscle contraction, rigor mortis, etc.

Important Questions on Muscle Contraction and Relaxation

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 1

What are the benefits of P.M.R.?

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 2

What is muscle relaxation called?

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 3

What induces muscle relaxation?

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 4

Why is ATP required for muscle relaxation?

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 5

Rigor Mortis is a reversible condition.

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 6

Why Rigor Mortis occurs after death ?

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 7

What are the 3 stages of Rigor Mortis?

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 8

What is Rigor Mortis?

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 9

Identify the correct order of stages in muscle contraction

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 10

During muscle contraction

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 11

Which ion is essential for muscle contraction?

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 12

During muscle contraction

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 13

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

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 14

Sliding filament theory can be best explained as

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 15

A single isolated contraction of the muscle fibre is called twitch.

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 16

During muscle contraction, size of ‘A’ bands remains the same.

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 17

Choose the wrongly matched pair.

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 18

Which is not true for red fibres?

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 19

Upon stimulation of skeletal muscles calcium is immediately made available for binding to troponin from:

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Biology>Skeleton and Movement>Muscle Contraction and Relaxation> Q 20

The globular head of myosin contains