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NEETZoologyLocomotion and Movement

What is the function of the myosin head?

Options

  1. ATo bind to the exposed active sites on myosin
  2. BTo release ATP and P1
  3. CTo break the cross-bridge
  4. DTo be an ATPase enzyme

Correct answer

D. To be an ATPase enzyme

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. Increase in Ca²⁺ level leads to the binding of calcium with a subunit of troponin on actin filaments and thereby remove the ma

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