Muscular System
Biology ⇒ Human Biology
Muscular System starts at 6 and continues till grade 12.
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See sample questions for grade 12
Describe the process of muscle relaxation after contraction.
Describe the role of antagonistic muscle pairs in movement.
Describe the role of troponin and tropomyosin in muscle contraction.
Describe the sliding filament theory of muscle contraction.
Distinguish between isotonic and isometric muscle contractions.
Explain the difference between fast-twitch and slow-twitch muscle fibers.
Explain the difference between origin and insertion of a muscle.
Explain the role of ATP in muscle contraction and relaxation.
Explain the significance of creatine phosphate in muscle metabolism.
Name the muscle responsible for closing the jaw during chewing.
Name the muscle that is primarily responsible for flexing the forearm at the elbow.
Name the neurotransmitter released at the neuromuscular junction to stimulate muscle contraction.
Name the process by which muscles increase in size due to exercise.
Name the structure that stores calcium ions in muscle fibers.
Name the two main protein filaments involved in muscle contraction.
A patient is diagnosed with myasthenia gravis, an autoimmune disorder affecting the neuromuscular junction. Describe the physiological mechanism by which this disease impairs muscle contraction.
A sprinter and a marathon runner have different muscle fiber compositions. Explain how the proportion of fast-twitch and slow-twitch fibers affects their athletic performance.
Describe the role of satellite cells in skeletal muscle repair and regeneration.
Explain how the length-tension relationship affects the force generated by a skeletal muscle during contraction.
Explain the physiological basis of rigor mortis and why it occurs after death.
