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Which nerves from the brain are known to decussate?

The optic nerves and the pyramidal tracts are two examples of nerves that decussate, or cross over to the opposite side of the body, within the brain. This crossing of nerve fibers helps with the coordination of sensory and motor functions between the brain and the rest of the body.


What are the two groups of nerves into which the pns is divided?

The peripheral nervous system (PNS) is divided into two groups of nerves: sensory nerves, which transmit information from the body to the central nervous system, and motor nerves, which transmit information from the central nervous system to the muscles and glands to produce a response.


Where do the two optic nerves reach the diencephalon?

The two optic nerves reach the diencephalon at the optic chiasm, a structure located at the base of the brain where the nerves partially cross over each other. From the optic chiasm, the optic nerves continue on to the thalamus within the diencephalon.


What are the two channels which relay the messages to and from the brain and to the body parts that will do the action?

These "channels " are actually nerves termed as Afferent and Efferent nerves usually called motor and sensory nerves.


What are the breathing nerves?

The primary nerves involved in breathing are the phrenic nerve and the intercostal nerves. The phrenic nerve controls the diaphragm, the main muscle involved in breathing, while the intercostal nerves control the muscles between the ribs that help with the mechanics of breathing.