the body are called organs and these in their work combine to form
systems. The entire body, on account of the method of its construction and
the character of its work, may be classed as an organization.

*Exercises.*—1. Name and locate the chief external divisions of the body.

2. What tissues may be found by dissecting the leg of a chicken?

3. Name the most important properties and the most important uses of
muscular tissue, osseous tissue, and connective tissue.

4. Define an organ. Define a system. Name examples of each.

5. Name the chief cavities of the body and the organs which they contain.

6. What tissues are present in the hand? How does each of these aid in the
work of the hand?

7. Define an organization. Show that a railway system, an army, and a
school are organizations.

8. What is meant by the phrase "division of labor"? In what manner is the
division of labor practiced in a shoe or watch factory? What are the
advantages?

9. What are the proofs that the body is an organization?



PRACTICAL WORK