Skeletal Muscle Fibers (Three Types)
Fast Fibers
Fast Glycolytic
Intermediate Fibers
Fast Oxidative Glycolytic
Slow fibers
RED muscle fiber (high in myoglobin content and has many mitochondria).
Slow Fibers
Slow Oxidative
Slow fibers
Slow contraction rate.
Slow fibers
Smallest diameter,so least powerful.
Intermediate fibers
WHITE muscle fiber, myoglobin content.
Fast fibers
WHITE muscle fiber.
Skeletal Muscle Fiber
is either "slow" or "fast" depending on how fast ATP is hydrolyzed in the myosin heads
Fast fibers
largest diameter, so strongest.
Fast fibers
Fast contraction rate too.
Intermediate fibers
Fast contraction rate.
Fast fibers
Few Mitochondria.
Slow fibers
High fatigue resistance
Intermediate fibers
Intermediate fatigue resistance. Intermediate number of mitochondria.
Slow fibers
Located in the: -Neck Muscles -Back Muscles -Calf Muscles
Fast fibers
Located in the: -arm muscles
Intermediate fibers
Located in the: -leg muscles (running/walking)
Fast Fibers
Low fatigue resistance.
Intermediate fibers
Mid-size fiber diameter
