Which of the Following is the Area of a Sarcomere

Question

Which of the following is the area of a sarcomere that contains only thin filaments?
A) H band
B) A band
C) I band
D) M line
E) Z line

Accepted Answer

The I band in a sarcomere is the region that contains only thin filaments. It is the area that spans across two sarcomeres, from the edge of one A band to the edge of the next A band, and it becomes narrower during muscle contraction.