1. True or false: The end organs (receptors) of smell are known as olfactory neurons.   True   False   Hint Hint       2. Identify the structure 'A' in this diagram.   Optic Nerve   Retina   Optic Papilla   Optic Chiasma   Half-n-half Clue   3. Viscous fluid filled in the space behind the lens:   Aqueous humor   Vitreous humor   Both   Half-n-half Clue   4. Identify the ear ossicle "A" in this diagram.   Incus   Malleus   Stapes   Hint       5. True or false: Few taste receptors are also found in the cheek.   True   False   6. Layer of the eye in which rods and cones are found   Sclera   Cornea   Choroid   Retina   Hint       7. Smallest bone in the human body.   Stapes   Hyoid   Incus   None of these   Hint