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1). The second hardest naturally occurring substance in nature is?-
Enamel
Living tissue inside the tooth is known as?
Pulp
The point where the optic nerve enters the eye?
Blind Spot
Three small bones that connect the eardrum with the inner ear?
Ossicles
Hard substance that builds on plaque?
Tartar
A sticky, colorless film that forms on teeth and promotes tooth decay?
Plaque
The process in which the pupil of the eye gets larger?
Dilation
The inner ear is known as the?
Labyrinth
Bad breath is also known as?
Halitosis
What is Responsible for producing tears?
Lacrimal Gland
A condition in which the eye lens has an uneven curvature?
Astigmatism
Ringing in the ear is known as?
Tinnitus
The area immediately around the teeth is known as?
Periodontium
The window of the eye is called?
Cornea
The ability to determine the direction a sound comes from?
Binaural Hearing
Swollen and inflamed with pus gathering is known as?
Abscessed
Photosensitive chemical in rods that enables one to see in dim light?
Visual Purple
A hereditary disease in which an over-growth of bone causes the ossicles to lose their ability to move?
Otosclerosis