AP Psychology Topic 1.2 - Overview of the Nervous System

Autonomic Nervous System (ANS)

The part of your nervous system that controls automatic body functions, like your heartbeat, breathing, and digestion.

Brain

The control center of your body that processes information, makes decisions, and controls behavior and body functions.

Central Nervous System (CNS)

Made up of the brain and spinal cord; it’s the main control center for the body and mind.

Parasympathetic Nervous System

The part of the ANS that calms your body down after stress, like slowing your heart rate and helping you digest food.

Peripheral Nervous System (PNS)

All the nerves outside the brain and spinal cord; it connects the CNS to the rest of your body.

Somatic Nervous System

The part of the PNS that controls voluntary movements (like moving your arms or legs).

Spinal Cord

A bundle of nerves inside your spine that carries messages between your brain and body.

Sympathetic Nervous System

The part of the ANS that gets your body ready to deal with danger or stress—your 'fight or flight' response