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Fill in the blanks.  a. The light band ...

Fill in the blanks. 
a. The light band contains actin and is called I band.
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 ‘1‘ 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'

A

1-Isotropic, 2-'M’. 3-'Z', 4--'A', 5-H zone

B

1-anisotropic, 2-'1' 3-'M',4-'Z', 5-sarcomere

C

1-'l', 2-'A', 3-'M', 4-'2', 5- 'H' zone

D

1-A’. 3-'M' 4-'Z', 5-sarcomere

Text Solution

Verified by Experts

The correct Answer is:
C
a. The light band contain actin and is called 'I' (isotropic) band.
b. The thick filaments in the 'A' band are held together in the middle of this band by a thin fibrous membrane called 'M' line.
c. In the centre of each 'I' band is an elastic fibre called 'Z' line which bisects it.
d. The central portion of the thick filament which is not overlapped by thin filaments is called the H zone.
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