Question

The muscle fibers which are fast oxidative, contain high myoglobin content and high density of blood capillaries and are resistant to fatigue are:

• A. Type-I
• B. Type-IIa
• C. Type-IIb
• D. Type-IIx

Hint:

For endurance-based activities requiring moderate strength, focus on Type-IIa fibers.

Answer 1

The Correct Option is B

Type-IIa muscle fibers, also known as fast oxidative fibers, are characterized by their high myoglobin content and high density of blood capillaries. They are resistant to fatigue and are used during activities that require a combination of endurance and strength.