Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
Which of the following regions of the sarcomere contains overlapping thick and thin filaments?
A
Z line
B
A band
C
I band
D
H zone
Verified step by step guidance
1
Understand the structure of a sarcomere: A sarcomere is the basic contractile unit of muscle fiber, composed of thick (myosin) and thin (actin) filaments.
Identify the regions of the sarcomere: The sarcomere is divided into several regions, including the Z line, A band, I band, and H zone.
Define the A band: The A band is the region of the sarcomere that contains the entire length of the thick filaments. It also includes the area where thick and thin filaments overlap.
Define the I band: The I band is the region that contains only thin filaments and is located on either side of the Z line.
Define the H zone: The H zone is the central part of the A band where there are only thick filaments and no overlap with thin filaments.