PHYSIOLOGY
MUSCLE CONTRACTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
What is the name of the thick filaments found in a sarcomere?
|
|
Actin
|
|
|
Myosin
|
|
|
Myoglobin
|
|
|
Titan
|
Explanation:
Detailed explanation-1: -Each sarcomere is composed of two main protein filaments-actin and myosin-which are the active structures responsible for muscular contraction.
Detailed explanation-2: -The thick filament, myosin, has a double-headed structure, with the heads positioned at opposite ends of the molecule. During muscle contraction, the heads of the myosin filaments attach to oppositely oriented thin filaments, actin, and pull them past one another.
Detailed explanation-3: -During contraction, the myosin heads extend from the thick filament surface and attach to actin in the thin filaments, causing the filaments to slide past each other in a cyclic, ATP-driven process.
There is 1 question to complete.