What initiates muscle contraction?

What initiates muscle contraction?
  1. Increase in calcium ion level
  2. Formation of cross-bridge between actin and myosin
  3. A signal sent by CNS via a motor neuron
  4. Breaking of ATP

Solution

Muscle contraction is initiated by a signal sent by the central nervous system (CNS) via a motor neuron.

Asked in: NCERT

Practice more Locomotion and Movement questions on Aicharya