Compared to Type I (Slow Oxidative) Skeletal Muscle Fibers, How

question 3

Multiple Choice

Compared to type I (slow oxidative) skeletal muscle fibers, how are type IIb (fast-glycolytic) skeletal muscle fibers different?

• A) Type IIb fibers have more abundant mitochondria.
• B) Type IIb fibers fatigue more readily.
• C) Type IIb fibers have more abundant myoglobin.
• D) Type IIb fibers are smaller in diameter.
• E) Type IIb motor units contain fewer fibers per alpha motor neuron.

---

Definitions:

Expected Return

The anticipated return on an investment based on the probabilities of various outcomes, factoring in both potential gains and losses.

Correlation Coefficient

A numerical metric that determines the intensity and orientation of a straight-line association between two factors.

Covariance

A measure of how two random variables change together, indicating the direction of their linear relationship.

Variances

Statistical measures that represent the degree of spread in a data set, indicating the variability around the mean.