PHYSIOLOGY
MUSCLE CONTRACTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Alternating A and I bands produce striations in skeletal muscle fibers.
|
|
True
|
|
|
False
|
|
|
Either A or B
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -The striated appearance of skeletal muscle tissue is a result of repeating bands of the proteins actin and myosin that are present along the length of myofibrils. Dark A bands and light I bands repeat along myofibrils, and the alignment of myofibrils in the cell causes the entire cell to appear striated or banded.
Detailed explanation-2: -What is the purpose of the alternating A bands and I bands in skeletal muscle fibers? a. Alternating bands allow the thick and thin filaments to slide past each other during a muscle contraction.
Detailed explanation-3: -A sarcomere is a contractile unit of skeletal muscle that is divided into I and A bands, M and Z lines, and H zone.
There is 1 question to complete.