MUSCLE PHYSIOLOGY

PHYSIOLOGY

MICROSCOPIC MUSCLE ANATOMY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When lines appear on the muscle cells, this means that the muscle is ____ ?
A
long
B
broken
C
sketched
D
striated
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: -Skeletal muscle fibers occur in muscles which are attached to the skeleton. They are striated in appearance and are under voluntary control.

Detailed explanation-3: -Striated muscle tissue is a muscle tissue that features repeating functional units called sarcomeres. The presence of sarcomeres manifests as a series of bands visible along the muscle fibers, which is responsible for the striated appearance observed in microscopic images of this tissue.

Detailed explanation-4: -Skeletal Muscle The basic unit is the muscle fiber with many nuclei. These muscle fibers are striated (having transverse streaks) and each acts independently of neighboring muscle fibers.

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