Muscle Mechanics Quiz

Froggy Jumps

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Test your knowledge on skeletal muscle structure and function!

Dr. Sarah Hayat

Pakistan

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Muscle Mechanics Quiz


Froggy Jumps Muscle Mechanics QuizVersion en ligne Test your knowledge on skeletal muscle structure and function! par Dr. Sarah Hayat 1 Which of the following is the smallest functional unit of a skeletal muscle fiber? a B. Muscle fiber b C. Sarcomere c A. Myofibril 2 Which protein provides elasticity and stability to the sarcomere? a A. Actin b D. Titin c B. Myosin 3 What initiates the release of acetylcholine at the neuromuscular junction? a C. Depolarization of the sarcolemma b A. Arrival of calcium in T-tubules c B. Arrival of an action potential at the motor neuron terminal 4 Which part of the myosin molecule binds to actin and ATP? a A. Tail b C. Head c B. Neck 5 What does Troponin-C bind to during muscle contraction? a B. Tropomyosin b C. Calcium ions c A. Actin 6 Rigor mortis occurs due to the absence of which molecule? a B. Acetylcholine b D. ATP c A. Calcium 7 In skeletal muscle, dark bands correspond to which filament? a A. Actin b C. Tropomyosin c B. Myosin 8 The role of T-tubules in skeletal muscle contraction is to: a B. Release ATP b C. Conduct action potentials into the muscle fiber c A. Store calcium ions 9 Which protein complex blocks the myosin-binding sites on actin in resting muscle? a C. Tropomyosin b B. Myosin c A. Troponin-C