MUSCLE
SKELETAL MUSCLE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
A band to A band
|
|
|
H band to H band
|
|
|
M line to M line
|
|
|
Z line to Z line
|
Detailed explanation-1: -A sarcomere extends from one Z disc to the successive Z disc. The Z disc serves to anchor the thin filaments to adjacent sarcomeres. Myofilaments occupy three-dimensional space. The arrangement of the myofilaments at different points in the sarcomere is shown in Figure 2-5, D and F.
Detailed explanation-2: -The giant protein titin (connectin) extends from the Z-line of the sarcomere, where it binds to the thick filament (myosin) system, to the M-band, where it is thought to interact with the thick filaments.
Detailed explanation-3: -The area between two Z lines, a sarcomere, can be considered to be the primary structural and functional unit directly responsible for muscle contraction.…
Detailed explanation-4: -Z-lines define the boundaries of each sarcomere. The M-line runs down the center of the sarcomere, through the middle of the myosin filaments. The I-band is the region containing only thin filaments. The H-zone contains only thick filaments.