central nervous system
The part of the nervous system that consists of the brain and the spinal cord.
peripheral nervous system
The part of the nervous system consisting of millions of nerve cells that communicate what is going on in the body.
Acts as the command center for the body; thousands of pieces of data are transmitted to and from every second.
Fluid that acts like a cushion and shock absorber for the brain and the spinal cord.
The largest part of the brain; controls muscle movements and receives information from the senses.
A distinct area of the cerebrum.
The part of the cerebrum that controls conscious movement and makes a person alert to what is going on around them.
The part of the cerebrum that interprets pain, touch, and temperature, as well as some tastes and pressure on the skin.
The part of the cerebrum that deals with hearing, speech, and memory.
The part of the cerebrum that stores information about what a person sees; receives messages from the eyes and interprets those messages.
The part of the brain that sends messages to muscles throughout the body; located underneath the cerebrum.
The part of the brain that connects to the spinal cord and controls involuntary actions.
Backbone; protects the spinal cord.
Bones in your spinal column.
A bundle of nerve fibers that connects the brain to the rest of the body.
A nerve cell that carries impulses between various parts of the body.
A nerve cell that carries messages to the brain.
A nerve cell that carries messages from the brain and spinal cord to the muscles.
The part of a neuron that receives messages from other neurons.
An electrical message passed from neuron to neuron.
The part of the neuron that receives messages from the dendrite and passes the messages to the next neuron.
A gap between neurons that messages cross.
Chemicals that cross the synapse and carry messages on to the next sensory neuron.
Protective covering of axons that help the neuron send messages faster.
somatic nervous system
Controls your skeletal muscle movements; helps your body adjust to its external environment.
autonomic nervous system
Controls involuntary activities; usually you do not have conscious control over these activities.
An action that happens before the brain has time to think about the action.