Which skeletal muscle fiber type is generally MOST fatigu...

Which skeletal muscle fiber type is generally MOST fatigue-resistant and rich in mitochondria and myoglobin?

easy

Type I (slow oxidative)

BType IIx/IIb (fast glycolytic)

CType II (fast) always has zero mitochondria

DAll fiber types have identical mitochondria and myoglobin

ESmooth muscle fibers only

Explanation

Type I fibers are slow, oxidative, highly aerobic, rich in myoglobin/mitochondria, and resist fatigue - ideal for endurance and posture.

Source: entermedschool.org