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What is the beneficial effect of treppe muscle contraction?

Important Questions on Locomotion and Movement

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Biology>Human Physiology>Locomotion and Movement>Muscular System
Assertion (A) : Skeletal muscle fibre is in syncytial state
Reason (R):  It is formed by fusion of cells
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Biology>Human Physiology>Locomotion and Movement>Muscular System
Regulatory proteins in a myofibril are
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Biology>Human Physiology>Locomotion and Movement>Muscular System
Arrange the following in a sequence from edge to centre in a sarcomere.
A) M-line
B) Z-line
C) H-zone
D) I-band
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Biology>Human Physiology>Locomotion and Movement>Muscular System
Which one of the following proteins does not play a role in skeletal muscle contraction?
MEDIUM
Biology>Human Physiology>Locomotion and Movement>Muscular System
Sliding filament theory can be best explained as:
HARD
Biology>Human Physiology>Locomotion and Movement>Muscular System
Calcium important in skeletal muscle contraction because 
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Biology>Human Physiology>Locomotion and Movement>Muscular System
Identify the correct statement with reference to shortening of sarcomere
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Biology>Human Physiology>Locomotion and Movement>Muscular System
Neurotransmitter released at the neuromuscular junction of a voluntary muscles is:
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Biology>Human Physiology>Locomotion and Movement>Muscular System
Name the ion responsible for the unmasking of active sites for myosin for cross-bridge activity during muscle contraction.
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Biology>Human Physiology>Locomotion and Movement>Muscular System
Which of the following is not a character of red muscle?
HARD
Biology>Human Physiology>Locomotion and Movement>Muscular System
Which type of tissue is correctly paired with its location?
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Biology>Human Physiology>Locomotion and Movement>Muscular System
Lack of relaxation between successive stimuli in sustained muscle contraction is known as:
HARD
Biology>Human Physiology>Locomotion and Movement>Muscular System
Due to constant writing, muscles of hands show fatigueness because_____.
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Biology>Human Physiology>Locomotion and Movement>Muscular System
Which one of the following takes'place in a "myofibril when skeletal muscle contracts
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Biology>Human Physiology>Locomotion and Movement>Muscular System
Read the given statements and select the correct option.
Statement 1 : A primary myofilament is composed of a bundle of rod-like molecules of a protein myosin.
Statement 2 : Myosin and actin together form a contractile apparatus.
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Biology>Human Physiology>Locomotion and Movement>Muscular System

Find out the set of correct statements

(A) Meromyosin is the monomeric protein of myosin.

(B) Each meromyosin has head as HMM and tail as LMM

(C) Increase in Ca2+ level leads to binding of Ca with a subunit of tropomyosin on actin filament

(D) ATP hydrolysis is done by myosin head to make cross bridge.

MEDIUM
Biology>Human Physiology>Locomotion and Movement>Muscular System
The generation of excitation-contraction coupling involves all the following events except
HARD
Biology>Human Physiology>Locomotion and Movement>Muscular System

Muscle pump is :-

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Biology>Human Physiology>Locomotion and Movement>Muscular System

The given figure shows an actin (thin) filament. Identify the labelled parts A, B and C and select the correct option.

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MEDIUM
Biology>Human Physiology>Locomotion and Movement>Muscular System
Muscle fatigue is due to accumulation of