A. DIRECTION: Identify what is described in the following. Shade the correct answer. 1. The bone in the head is called O brain O skull 2. The two (2) types of skeleton are axial and O appendicular O perpendicular 3. The body's largest organ is O skin O legs 4. Large intestines are also known as O colon O colloid 5. Trachea is also called O windmill O windpipe 6. It is the described as "river of life" O water O blood 7. The pumping organ of body O heart O head O 8. The primary organ of Nervous System O blood vessel O brain 9. The functional unit of Nervous System O neuron O blood cells​