Question

Anisotropic band is made of

• A. Elastin filaments.
• B. Actin filaments.
• C. Myosin filaments.
• D. Both B and C.

Answer 1

The correct option is D

Both B and C.

The correct option is D.

Explanation for the correct option:

1. There are two types of filaments in skeletal muscle fiber. They are myosin (thick filament) and myosin (thin filament) (actin). Throughout the length of the myofibrils, the 'A' and 'I' bands are alternately organized.
2. The anisotropic band in skeletal muscle is also known as the A band.
3. Actin filaments and myosin filaments make up the anisotropic band.

Explanation for the incorrect options:

Option A:

Yellow fibers are another name for elastic fibers. Several connective tissues have it in their extracellular matrix. Several forms of elastic fibers include elastin, oxytalan, and elaunin. Elastosis refers to the accumulation of elastic fibers in tissues. It has a degenerative nature to it.

Option B:

The anisotropic band is not only made of actin but is also made of myosin.

Option C:

The anisotropic band is not only made of myosin but is also made of actin.

Final answer: Anisotropic band is made actin and myosin filaments.