Asked by Vanessa Green on May 06, 2024
Verified
The boundary between adjacent sarcomeres is the
A) A band
B) H zone
C) Z line (disc)
D) I band
E) M line
Sarcomeres
The fundamental units of a muscle's myofibril, responsible for muscle contraction.
Z Line (Disc)
A key component in skeletal muscle fibers that anchors the actin filaments and marks the boundary between sarcomeres.
- Comprehend the architecture and purpose of different muscular organelles and the sarcomere.
Verified Answer
WN
Wendy NeyraMay 12, 2024
Final Answer :
C
Explanation :
The Z line (also called Z disc) is the boundary between adjacent sarcomeres in a myofibril. It is where the actin filaments attach and serves as the anchor point for the sarcomere during muscle contraction. The A band (choice A), H zone (choice B), I band (choice D), and M line (choice E) are all structures within the sarcomere, but they do not mark the boundary between adjacent sarcomeres.
Learning Objectives
- Comprehend the architecture and purpose of different muscular organelles and the sarcomere.