Q441
"Z" disc layer in insects found in
A.
Tracheoblast
B.
Sinus
C.
Neurons
D.
Muscles
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
"Z" disc layer in insects found in Muscles.Z-discs delineate the lateral borders of sarcomeres and are the smallest functional units in striated muscle. The z-line appears in between the I-bands as a dark line that anchors the actin myofilaments.
The core of a Z-disc consists of actin filaments coming from adjacent sarcomeres which are crosslinked by α actinin molecules.