Read the following statements and choose the follwoing option: 1. Meromyosin has two important parts 2. Meromyosins constitute only thin filaments 3. Myosin is a monomeric protein. 4. Muscle contraction is initiated by a signal sent by the central nervous system (CNS) via a sensory neuron.

Step-by-step solution

Each meromyosin has two important parts, a globular head with a short arm and a tail, the former being called the heavy meromyosin (HMM) and the latter, the light meromyosin (LMM).,The endoplasmic reticulum, i.e., sarcoplasmic reticulum of the muscle fibres is the store house of calcium ions.