First slide

Muscle

Question

Select the incorrect statement.

Easy

A

Each I band is bisected at it centre by a Z line
B

An M line is present at the centre of each A band
C

The thin filaments of an I band are attached to the Z line
D

The thick filaments are attached to the thin filaments by the M line

Solution

The thick filaments in the A band are held together in the middle of this band by a thin fibrous membrane called M line. The M line does not attach thick filaments to thin filaments.

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