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NEETZoologyLocomotion and Movement

What is the function of troponin in muscle contraction?

Options

  1. AIt acts as a neurotransmitter
  2. BIt regulates the release of calcium ions
  3. CIt forms cross bridges with myosin
  4. DIt masks the active sites for myosin

Correct answer

D. It masks the active sites for myosin

Step-by-step solution

Muscle contraction is initiated by a signal sent by the central nervous system (CNS) via a motor neuron.The junction between a motor neuron and the sarcolemma of the muscle fibre is called the neuromuscular junction or motor-end plate.When a neural signal reaches the neuromuscular junction, it releases a neurotransmitter (Acetylcholine) which generates an action potential in the sarcolemma.The junction between a motor neuron and the sarcolemma of a muscle fiber is called the neuromuscular junction or motor-end plat

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