Body
What part of the brain controls the thinking, reasoning, and memory?
Cerebrum
Carries messages to your brain causing you to hear
Auditory Nerve
The largest lymphatic organ
Spleen
The center of the iris through which light passes
Pupil
A person trained to examine eyes and prescribe glasses
Optometrist
What system consists of the brain and the spinal cord?
Central Nervous System
Send messages to your brain which allow you to smell
Olfactory Receptors
White blood cells inside lymph nodes
Lymphocytes
The tough outer layer of the eye
Sclera
Bacteria and viruses that cause diseases
Pathogens
Nerves
Sound waves travel through this from the outer ear to the eardrum
Auditory Canal
Enlarged bunches of lymphatic tissue
Lymph nodes
Gives the eye it's color
Iris
The special kind of skin cells that line your mouth, nose, and throat
Mucous Membrane
The enzyme the kills bacteria in your tears and perspiration.
Lysozyme
The thin membrane of skin that separates the outer ear from the middle ear
Eardrum
Transportation tubes for lymph
Lymph Vessels
The hollow space in your skull that surrounds each eye
Eye Socket
The hairlike projections that line the mucous membrane
Cilia
The body's ability to resist a particular disease
Immunity
The part of the ear that catches the sound
Outer Ear
Called tissue fluid before it enters the lymph vessels
Lymph
This becomes thicker when you look at closer objects and thinner when you look at distant ones
Lens
The chemical that destroys most of the harmful bacteria that enter your stomach
Hydrochloric Acid