Thick and thin filaments form the (i)____. The thick and thin filaments overlap and form a definite pattern that form repeating units called (ii).

(i) myofibrils (ii) sarcomere

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(i) sarcomere (ii) myofibrils

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(i) fascia (ii) fascicle

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(i) fascicle (ii) fascia

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Solution

The correct option is A
(i) myofibrils (ii) sarcomere

Thick and thin filaments are protein filaments which form cylindrical structures called myofibrils. Each myofibril is arranged in a pattern, which repeats itself throughout the length of the myofibril.This repeating pattern is called a sarcomere which is the basic contractile unit of a muscle fibre.

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Similar questions

Thick and thin filaments form the __________. The thick and thin filaments overlap and form a definite pattern that form units called______.

Thick and thin filaments form the (i)__________. The thick and thin filaments overlap and form a definite pattern that form repeating units called (ii)______.

Q. In the transverse section of myofibril, the region of A band where thick and thin filaments overlap, each actin filament is surrounded by __(A)__thick filaments and each myosin filament is surrounded by __(B)__ thin filaments.

Q. Match column I with column, option from. the codes given below:

Column I	Column II
A. Structural and functional -unit of a myofibril	(i) H-zone
B. Protein of thin filament	(ii) Myosin
C. Protein of thick filament	(iii) Sarcomere
D. The central part of thick filament not overlapped by thin filament	(iv) Actin

Q. Read the following A to D statements and select the one option that contains both correct statements.

a. Z-line is present in the centre of the light band
b. Thin filaments are firmly attached to the M-line
c. The central part of thick filaments, not overlapped by thin filaments is called Z-band
d. Light band contains only thin filaments

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