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The functional unit of contraction is :-...

The functional unit of contraction is `:-`

A

Muscle fibre

B

Sarcomere

C

Sarosomes

D

Sarcoplasm

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The correct Answer is:
C
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Explore conceptually related problems

Fill it he blanks with the suitable words The thick filaments in the 'A' band are also held together in the middle of this and by a thin fibrous membrane called (a)_____. The 'A' and 'I' bands are arranged alternately throughout the length of the (b)____. The portion of the myofibril between two successive 'Z' lines is considered as the functional unit of contraction and is called a (c)_____.

Sarcomere is the functional unit of contraction in a muscle fibre. Indentify the portion of myofibril that constitutes a sarcomere

Read the statement regarding myofibril and choose the correct option 1. Each myofibril has alternate dark and light bands. 2. In the centre of each 'A' band is an elastic fibre called 'Z' -line 3. 'A' and 'I' bands are arranged alternately throughout the length of myofibril 4. Sarcomere is the functional unit of contraction 5. Central part of thick filament not overlapped by a thin filament is the 'M' line

Which of the following is the functional unit of muscle contraction?

Assertion: The portion of the myofibril between two successive Z-lines is considered as the function unit of contraction called sarcomere. Reason: During contraction, l-bands get reduced whereas A-bands retain the length , thereby causing shortening of the sarcomere.

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Functional unit of contraction of muscle is

MOTION-LOCOMOTION & MOVEMENT-EXERCISE -2 (NCERT Based Questions)
  1. The junction between a motor neuron and the sarcolemma of the muscle f...

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  2. Which points are correct for cardiac muscles of (A) They are stria...

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  3. The body weight contributed by muscles in a human adult is :

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  4. In paramoecium, the movement of food through cytopharynx take place by...

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  5. The striated appearance of the myofibril is due to the distribution pa...

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  6. Repeated activation of the muscles can lead to the accumulation of :

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  7. Muscles contain a red coloured oxygen storing pigment called

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  8. In a resting state, the central part of thick filament which is not ov...

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  9. During contraction of muscles :-

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  10. Which points are correct with the regarding of skeletal muscles ? (A...

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  11. Which character is not associated with white muscle fibres ?

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  12. Which points are correct about visceral muscles ?

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  13. Correctly match column-I with column -II .

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  14. Which muscles having functionally multinucleated conditions ?

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  15. The functional unit of contraction is :-

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  16. The correct sequence of events during relaxation of muscle is :- (i)...

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  17. Striated muscles are primarily involved in (A) Locomotory actions ...

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  18. Which character is // are associated with locomotion ? (A) All locom...

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  19. The thick filaments in 'A' band are held together in the middle of thi...

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  20. A neural signal reach in neuromuscular junction releases a nuerotransm...

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