The document lists and describes the main systems and organs that make up the human body. It discusses the digestive system including the mouth, esophagus, stomach, liver, teeth, tongue, large intestine, small intestine and anus. It also lists the muscular, skeletal, respiratory and circulatory systems and some of their key components like biceps, triceps, ribs, lungs, heart, arteries and veins.

1. The Body Machine

2. Digestive System Muscular System Respiratory System Skeletal System Circulatory System

3. Digestive System Mouth Oesophagus Stomach Liver Teeth Tongue Large intestine Small intestine Anus

4. Muscular System Biceps Triceps Gluteus Quadriceps Pectorals Abdominals

5. Skeletal System Skull Ribs Feet bones Hand bones Pelvis Sternum Backbone Femur

6. Respiratory System Nose Mouth Throat Windpipe Lungs Bronchi

7. Circulatory System Heart Arteries Veins Capillaries Red blood cells White blood cells Platelets