The human brain is a complex structure composed of approximately 86 billion neurons, which are the nerve cells responsible for transmitting information. 
Types of neurons
Motor neurons: Transmit signals from the central nervous system (CNS) to the muscles.
Sensory neurons: Receive stimuli from sensory receptors and send information to the CNS.
Interneurons: Connect neurons to each other in the CNS, playing a crucial role in information processing.
Neurons communicate with each other through electrical impulses and neurotransmitters: