Q. Identify the correct statements I. Acetylcholine is released when the neural signal reaches to the motor end plate II. Muscle contraction is initiated by signals sent by CNS $via$ a sensory neuron III. During muscle contraction, isotropic bands get elongated IV. Repeated activation of the muscles can lead to lactic acid accumulation in them The option with correct choices is
A) I and III
B) I and IV
C) II and III
D) I and II
Explanation
The junction between a motor neuron and sarcolemma of muscle is called neuromuscular junction (i) A neural signal reaching this junction (motor end plate) release a neurotransmitter (ii) Repeated activation of muscles can lead to the accumulation of lactic acid due to anaerobic break down of glucose in them
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.