The Human Nervous System Flashcards
Central Nervous System
Comprised of the brain and spinal cord
Brain
Controls how we think, learn, move, and feel
Spinal Cord
Carries messages back and forth between the brain and the nerves that run throughout the body
Peripheral Nervous System
The nervous system outside the brain and spinal cord
Somatic Nervous System
Subdivision of the PNS. Allows you to move and control muscles throughout your body
Automatic Nervous System
Subdivision of the PNS. Regulates involuntary physiologic processes
Sympathetic Nervous System
Helps your body activate its “fight-or-flight” response. This system’s activity increases when you’re stressed, in danger or physically active. Its effects include increasing your heart rate and breathing ability, improving your eyesight and slowing down processes like digestion
Parasympathetic Nervous System
Relaxes your body after periods of stress or danger