Immune System Basics
This type of immune response causes redness, warmth, and swelling around an injury.
Inflammation
This whole-body response raises temperature to slow pathogen growth.
Fever
This type of neuron carries messages from the body to the brain.
Sensory neuron
This structure in the eye focuses light to form an image.
Lens
A quick, automatic response to a stimulus is called this.
Reflex
This type of immunity occurs when your body makes its own antibodies after exposure to a pathogen.
Active immunity
These white blood cells attack invaders in a general, nonspecific way.
Macrophages
This type of neuron carries signals from the brain to muscles.
These cells in the eye detect color.
Cones
This structure helps process reflexes quickly without waiting for the brain.
Spinal cord
This type of immunity happens when antibodies are given to you, not made by your body.
Passive immunity
These cells are part of the specific immune response and include B cells and T cells.
Lymphocytes
This type of neuron connects other neurons within the brain and spinal cord.
Interneuron
These cells help you see in low light.
Rods
A reflex arc helps protect the body by speeding up this process.
Response time
These proteins attach to specific pathogens to help destroy them.
Antibodies
These molecules on cell surfaces help the immune system recognize “self” vs. “non-self.”
Antigens
The small gap between two neurons where signals pass is called this.
Synapse
This membrane vibrates when sound waves enter the ear.
Eardrum
This type of response is learned rather than automatic.
Learned response
These cells “remember” past infections and respond faster the next time.
Memory cells
These immune cells can kill infected cells or activate other immune responses.
T cells
This part of the nervous system is bypassed during a reflex action.
Brain
This part of the inner ear helps convert vibrations into nerve signals.
Cochlea
Protective gear in sports helps prevent this type of brain injury.
Concussion