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Sarcomere

The region ma...

Question

The region made of thin filaments is _______ .

A

A band

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B

I band

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C

Z line

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D

H band

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E

M Line

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Solution

The correct option is B
I band

The A band is the darker staining band. The I band is the light band. The I band is made of thin filaments. The Z line runs through the I band. The H band bisects the A band. The M line runs through the H band. A sarcomere is the segment that runs from Z line to Z line.

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Similar questions

Fill in the blanks.

a .

The light band contains actin and is called …

1

b

.The thick filaments in the …

2

… band are held together in the middle of this band by a thin fibrous membrane called …

3

… line.
c.In the centre of each ‘I’ band is an elastic fibre called …

4

… line which bisects it.

d

.The central portion of the thick filament which is not overlapped by thin filaments is called the …‘

5

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

Q. Identify the correct statements.

1. A-bands are dark and contain myosin.
2. I-bands are light and contain actin.
3. During the action, A band contracts.
4. The part between two Z-lines is sarcomere.
5. The central part of thin filament, not overlapped by thick filament is the H-zone.

Q. Assess the statements.
1. A-bands of the muscle is dark and contain myosin.
2. I-bands are the light bands and contain actin.
3. During muscle contraction the A-band contracts.
4. The part between the two Z-lines is called as sarcomere.
5. The central part of thick filament, not overlapped by thin filament, called H-zone.
Of the above statements.

Q. Choose the option having all the correct statements:
I. Thin and thick filaments consist of myosin and actin, respectively.
II. The H-zone and I-band consists of only myosin and actin, respectively.
III. A-band contains both actin and myosin.
IV. M-line and Z-line are in the middle of thin and thick filaments, respectively.

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