Answer:
Anterior Ventral Horn
Step-by-step explanation:
The structure labeled "A" is called Anterior Ventral Horn and is a structure that is part of the spinal cord. This structure contains the motor neuron cell bodies that innervate skeletal muscles. These neurons are referred to as alpha, adelta or low motor neurons, and are the only way the nervous system can control inter-muscular muscle movements either voluntarily or involuntarily.