NERVOUS SYSTEM (CP 2025-2026)

the process of absorbing something again

the action/process of filtering something

A fluid containing water and waste products

A junction at which a neuron can transfer an impulse to another through diffusion

The body’s chemical messengers, acting as signals that transmit information across the nervous System

Consists of the brain and spinal cord, acting as the body’s primary control center

A vast network of nerves outside the brain and spinal cord that connects the CNS

Neurons that receives a signal from the environment

Neurons that connect to muscles or glands

The nerve between sensory and motor neurons that inergrates, processes, and passes on information between both neurons

moves from dendrite -> cell body -> axon

Receives signal from environment or another neuron

Stores the nucleus, essential organelles, and cytoplasm

Long skinny part that carries signal away from the cell body

An automatic response that doesn’t require to think or make a decision about

The signal only goes to the spinal chord

helps perceive and respond to internal & external environments, Maintains homeostasis

Activates when a neuron is stimulated by another neuron or by the environment through an electrochemical

Nerve impulse arrives at an axon terminal which the vesicle releases a protein into the gap between the two neurons triggering a response in the next neuron

Causes a new impulse on the next neuron

Any substance that affects neurotransmitters or mimics affects of the nerve function (gas, mood altering drugs, depressants, etc.)

Acetylcholine, epinephrine, dopamine, serotonin

They rely on delicate, high-demand chemical processes

enzyme imbalances, rapid re-absorption, damage to the synaptic clef