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
sense organ spinal cord and brain
stimuli
sense organ-nerves-spinal cord-brain
sense organ-nerves-spinal cord-brain
sense organ-nerves-spinal cord-brain
sense organ-nerves-spinal cord-brain
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.
A sensory nerve passes messages from a sense organ to the brain.
The BRAIN!
The BRAIN!
The spinal cord
nerves