_________________ The only neurotransmitter between motor neurons and voluntary muscles

Short Answer

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Answer: Acetylcholine (ACh)

Step by step solution

01

Understanding the Nervous System

The nervous system is responsible for transmitting signals between different parts of the body. It consists of two main cell types: neurons (nerve cells) and glial cells (support and protection cells). Motor neurons are a type of neuron that transmit signals from the central nervous system (brain and spinal cord) to the muscles, causing them to contract.
02

Identify the Communication Point Between Motor Neurons and Muscles

The communication between motor neurons and muscles occurs at a specialized junction called the neuromuscular junction. At this junction, motor neurons release a specific chemical, called a neurotransmitter, which binds to receptors on the muscle, resulting in muscle contraction.
03

Identifying the Neurotransmitter

At the neuromuscular junction, the neurotransmitter released by motor neurons is acetylcholine (ACh). Acetylcholine is responsible for muscle contraction in voluntary muscles.
04

Conclusion

The only neurotransmitter between motor neurons and voluntary muscles is acetylcholine (ACh), which plays a crucial role in initiating muscle contraction at the neuromuscular junction.

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