KAAP309 Unit 3 - Muscle Behavior & Metabolism

What can successive muscle twitches result in?

• Weaker muscle contractions

• No change in muscle contractions

• Stronger muscle contractions

• Muscle relaxation

What are the two types of contractions that need to be distinguished in muscle activity?

• Isometric and isotonic contraction

• Isometric and isobaric contraction

• Isotonic and isobaric contraction

• Isokinetic and isotonic contraction

Why is extra oxygen needed even after exercise has ended?

• To increase muscle size

• To cool down the body

• To replenish depleted ATP

• To prepare for the next exercise

What are the two physiological types of muscle fibers that need to be distinguished?

• Red and white fibers

• Fast-twitch and slow-twitch fibers

• Thick and thin fibers

• Long and short fibers

What factors affect muscular strength?

• Diet and hydration

• Sleep and rest

• Genetics and training

• Age and weight

What are the effects of resistance and endurance exercises on muscles?

• Decrease in muscle mass

• Increase in flexibility

• Changes in muscle strength and endurance

• Reduction in bone density

What is the first phase of a muscle twitch?

• Contraction

• Relaxation

• Latent period

• Refractory period

Which phase follows the latent period during a muscle twitch?

• Refractory period

• Relaxation

• Contraction

• Prolongation

During which phase does the muscle return to its resting state during a twitch?

• Latent period

• Contraction phase

• Relaxation phase

• Stimulation phase

What is the threshold in the context of muscle contraction?

• The maximum voltage that causes a muscle twitch

• The minimum voltage that causes a muscle twitch

• The constant voltage that causes different muscle twitches

• The variable voltage that causes the strongest muscle contraction