Skeletal Muscle Adaptation to Exercise

What are the three types of muscles in the body?

• Cardiac, skeletal, smooth

• Cardiac, skeletal, rough

• Cardiac, smooth, rough

• Skeletal, smooth, rough

What is an isometric contraction?

• Muscle shortens during tension

• Muscle lengthens during tension

• No change in muscle length during tension

• Muscle twists during tension

Which type of muscle contraction is most common?

• Isometric

• Concentric

• Eccentric

• Static

What is a common cause of muscle soreness after exercise?

• Isometric contractions

• Concentric contractions

• Eccentric contractions

• Static contractions

Which type of muscle fibers are considered "power fibers" and are recruited for activities like jumping and sprinting?

• Type 1 fibers

• Type 2a fibers

• Type 2x fibers

• Type 3 fibers

What is the primary energy pathway used by Type 2x muscle fibers?

• Aerobic pathway

• Anaerobic pathway

• Glycolytic pathway

• Oxidative pathway

Why do Type 1 muscle fibers have high mitochondrial content?

• To support anaerobic energy production

• To support aerobic energy production

• To increase muscle size

• To decrease fatigue

Which muscle fiber type is a hybrid of Type 1 and Type 2x fibers?

• Type 1 fibers

• Type 2a fibers

• Type 2x fibers

• Type 3 fibers

During light intensity exercise, which muscle fiber type is primarily recruited?

• Type 1 fibers

• Type 2a fibers

• Type 2x fibers

• Type 3 fibers

Which type of muscle fibers are recruited at higher workloads to provide necessary power but fatigue quickly?

• Type 1 fibers

• Type 2a fibers

• Type 2x fibers

• Type 3 fibers