neurons
The brain is a organ. The brain is the organ that receives messages from the six senses; the touch sense, the seeing sense, the hearing sense, the smelling sense and the tasting senses. If you are asking 'Is the brain the largest organ?' Well, no. The largest organ is not the brain, or the chest, or the stomach. It is the skin.
Thalamus
sense organ-nerves-spinal cord-brain
The organ system that helps your body to sense things is known as the sensory system. This will rely on the circulatory fluids to send messages from the sense organs to the brain.
The tongue is not and organ it is an appenditure control by the larynx which is controlled by the frontal lobe of the brain(Right side) which is commanded by a simple messaging system called message DNA and RNA something only the dumb can understand. If you were not aware, FYI, the brain is part of the central nervous system.
The BRAIN!
Your organ in the brain used for smelling.
This mainly happens in the case of a reflex action. The spine receives the information from the receptor and gives commands to the effector a fraction of a second before the brain registers the action. This happens only with the sense of touch
nerve
The BRAIN!
The nervous system carries messages from your sense organs to your brain. These messages are transmitted through sensory neurons that send signals to the brain to be interpreted as different sensations such as sight, sound, touch, taste, and smell.
The thalamus receives messages from sensory receptors and relays this information to the cerebrum. It acts as a relay station for sensory information before it reaches higher brain regions for processing.