Chapter 51

many senses have we? What is the ear? Name the three parts of the ear. How do we hear? How should we treat the ear?

Name the principal parts of the eye? What are found in the eyeball? How is the eyeball moved in the socket? How is the eye moistened? Of what use is the lens of the eye? Of what use is the pupil of the eye? How may we preserve the eyesight?

Where are the nerves of smell located? Of what use is the sense of smell?

Where are the nerves of taste found? How is the sense of taste sometimes injured or lost? What do we detect with the sense of taste? Of what use to us is the sense of taste?

With what sense do we feel objects? In what parts of the body is this sense most delicate? Upon what do all the special senses depend? Does anything that injures the brain and nerves also injure the special senses? What is the effect of alcohol and tobacco upon the sense of sight? How is the hearing affected by tobacco-using? The sense of smell? The sense of taste?