7 It is divided into two major parts: 4 the somatic nervous system and the autonomic nervous system. 6 The somatic nervous system governs voluntary action and body reflexes; the autonomic nervous system regulates involuntary actions such as breathing and digestion. The PNS also connects the central nervous system to environmental stimuli to gather sensory input and create motor output. 6 It is made up of different kind of neurons or nerve cells, which communicate with each other through electric signaling and neurotransmitters. 8 Per AniMed’s YouTube Channel, nerves reach from your brain to your face, ear, eyes, nose, and spinal cord and from the spinal cord to the rest of your body. 9 Sensory nerves gather information from the environment, send that information to the spinal cord, which then sends the message to the brain. 10 The brain then makes sense of that message and fires of a response. 8 Motor neurons deliver the instructions from the brain to the rest of your body. 9 The spinal cord, which is made of a bundle of nerves running up and down the spine, sends messages to and from the brain at every second. 11 The differences between CNS and PNS include: 4 In the CNS, collections of neurons are called nuclei. In the PNS, collections of neurons are called ganglia. In the CNS, collections of axons are called tracts. In the PNS, collections of axons are called nerves. 8 Together the CNS and the PNS control every part of your daily life, from breathing and blinking to helping you memorize facts for a…
