MUSCLE NERVE CARTILAGE BONE
SMOOTH MUSCLE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Cardiac
|
|
|
Smooth
|
|
|
Skeletal
|
|
|
None of the above
|
Detailed explanation-1: -Skeletal muscles contract most quickly and also get fatigued that quickly.
Detailed explanation-2: -Fast-twitch muscle fibers contain fewer capillaries and mitochondria and less myoglobin. This type of muscle fiber can contract rapidly and powerfully, but it fatigues very quickly. Fast-twitch fibers can sustain only short, anaerobic (non-oxygen-using) bursts of activity.
Detailed explanation-3: -Fast-twitch type II muscle fibers are further divided into Type IIx and Type IIa. Typically, these have lower concentrations of mitochondria, myoglobin, and capillaries compared to our slow-twitch fibers, which means they are quicker to fatigue (1, 2).
Detailed explanation-4: -Skeletal muscle fibers are broadly classified as “slow-twitch” (type 1) and “fast-twitch” (type 2).