Muscle Mechanics

1. Which type of muscle contraction occurs when the muscle lengthens while producing force?

• A) Concentric contraction
  
  

• B) Eccentric contraction

• C) Isometric contraction

• D) Isokinetic contraction

2. The force a muscle can generate is primarily dependent on which of the following factors?

• A) Muscle length and cross-sectional area
  
  

• B) Muscle temperature and hydration

• C) Number of mitochondria

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  D) Blood pressure

3. What is the primary function of the Golgi tendon organ in muscle biomechanics?

• A) Detects changes in muscle length

• B) Prevents excessive force generation

• C) Controls voluntary muscle movements

• D) Increases muscle contraction force

4. Which of the following best defines muscle torque?

• A) The product of muscle force and the moment arm

• B) The ratio of muscle length to force

• C) The force applied per unit area of muscle

• D) The resistance offered by the muscle

5. Which biomechanical principle explains why a longer muscle produces greater force during contraction?

• A) Force-Velocity Relationship

• B) Length-Tension Relationship

• C) Wolff’s Law

• D) Newton’s Third Law

6. What is the primary contractile unit of muscle fiber?

• Myosin

• Actin

• Sarcomere

• Troponin

7. What type of muscle contraction occurs when there is no change in muscle length despite force generation

• Isotonic

• Isokinetic

• Isometric

• Eccentric

8. Which of the following muscle fiber types is most resistant to fatigue

• Type I

• Type IIa

• Type IIb

• Type III

9. Which type of muscle contraction generates the greatest force?

• A. Concentric

• B. Isometric

• C. Eccentric

• D. isokinetic

10. Active tension in a muscle is primarily generated by

• A. Connective tissues elasticity

• B. Cross bridge cycling between actin and myosin

• C. The recoil of tendons

• D. Passive stretching of the muscle