THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Messages are sent throughout the body and received by the brain through a process called neurotransmission. The drawing below explains how neurotransmission works. 1. The cells shown here are called neurons.

Detailed explanation-2: -The spinal cord conducts sensory information (information from the body) from the peripheral nervous system to the brain. After processing its many sensory inputs, the brain initiates motor outputs (coordinated mechanical responses) that are appropriate to the sensory input it receives.

Detailed explanation-3: -Neurons send and receive electrical signals to communicate with each other in the nervous system and with other types of cells in the body, particularly muscles. At one end, neurons have branch-like projections called dendrites that allow them to receive signals.

Detailed explanation-4: -Sensory nerves are the network of neurons which extend from the sensory organs to the brain. They carry the messages from the sensory organs towards the brain.