Difference between "a" and "i" bands, Biology

DIFFERENCES BETWEEN "A" AND "I" BANDS

 

 

A-Band (Anisotropic band)

 

I-Band (Isotropic band)

1.

It has wide H-zone.

1.

It has thin Z-line.

2.

It gives dark appearance and hence also

2.

It gives light appearance hence also called

 

 

3.

called dark band.

 

It contains myosin filaments and parts of

 

 

3.

light band.

 

It contains part of actin filaments.

 

actin filaments.

 

 

4.

Its length remains unchanged during

4.

It shortens during muscle contraction.

 

muscle contraction.

 

 

Posted Date: 10/1/2012 3:53:45 AM | Location : United States







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