They are call synapses, there are two types chemical and electrical.
this is not 100% your answer but i know that it has many branches sticking out from the main part. to send it they send elctronic signals to your brain telling your brain something. it doesnt take long because since it has so many branches it can take a shortcut to go to the nearest place
Afferent nerves carry messages to and from the brain.
Im not sure your brain sends your brain messages. correct me if im wrong people.
Microscopic animals
Interneurons send messages from the spinal cord to the brain.
the brain is to busy sucking dick to receive messages
retina is connected to the nerve and the nerve sends the messages or images to the brain and the brain processes the images
Your brain stem.
the brain stem also sorts though the millions of messages that the brain and the rest of the body sent back and forth.
The brain is like the central control system of the body. The brain sends messages to and receives messages from other organs and systems.
The brain is like the central control system of the body. The brain sends messages to and receives messages from other organs and systems.
as big as the microscopic part of your nail