Definition
The part of the body's nervous system made up of the brain and spinal cord, which receives information from the senses, processes it, and sends out signals that direct thought, movement, and bodily function.
Plain English
The brain and spinal cord working together as the body's main control center. It takes in what you see, hear, and feel, decides what to do about it, and tells the rest of the body how to respond.
Context Anchor
Seen in aviation training discussions about how students learn, react to stress, form goals, and make decisions.
Derivation
From Latin centralis (at the center) and nervus (sinew, nerve). 'Central' signals that the brain and spinal cord are the hub, while the rest of the nerves running through the body are called the peripheral nervous system.
Why Pilots Care
Factors such as hypoxia, alcohol, medications, or fatigue impair central nervous system function, directly reducing judgment, reaction time, and decision-making accuracy in flight.
Grounding Statement
When a student pilot sees traffic, feels stress, remembers an instruction, and moves the controls, the central nervous system is involved.
Intuition Check
The central nervous system is not the same as all the nerves in the body. It means the brain and spinal cord specifically.
Example Sentence 1
Instructors should recognize that fatigue slows the central nervous system, which delays a student's reactions during maneuvers.
Example Sentence 2
A pilot must ensure adequate rest so the central nervous system remains sharp during long cross-country flights.