ANATOMY

Detailed explanation-1: -The motor neurons release a chemical, which is picked up by the muscle fibre. This tells the muscle fibre to contract, which makes the muscles move. Neurons carry messages from the brain via the spinal cord. These messages are carried to the muscles which tell the muscle fibre to contract, which makes the muscles move.

Detailed explanation-2: -Then nerves carry that data to and from your brain. Different kinds of neurons send different signals. Motor neurons tell your muscles to move. Sensory neurons take information from your senses and send signals to your brain.

Detailed explanation-3: -Motor nerves are the nerves responsible for all voluntary skeletal and somatic movement such as moving the leg or arm.

Detailed explanation-4: -The impulse travels out of the spinal cord along the length of the motor nerve. At the neuromuscular junction (where nerves connect to muscles), the impulse crosses from the motor nerve to receptors on the motor end plate of the muscle, where the impulse stimulates the muscle to move.

Detailed explanation-5: -Messages or signals from nerve cells in the brain (upper motor neurons) are typically transmitted to nerve cells in the brain stem and spinal cord (lower motor neurons) and then to muscles in the body. Upper motor neurons direct the lower motor neurons to produce muscle movements.