Human Systems

1. Digestive System

1.1. Mouth

1.1.1. Food first enters the mouth

1.2. Gullet

1.2.1. The food then travels down the gullet

1.3. Stomach

1.3.1. The stomach contains digestive juices which help to break down the food

1.4. Small Intestine

1.4.1. The small intestine asorbs the undigested food into the bloodstream

1.5. Large Intestine

1.5.1. The large intestine asorbs water

1.6. Anus

1.6.1. Wate is removed

2. Muscular System

2.1. Muscles

3. Skeletal System

3.1. Skull

3.2. Ribcage

3.3. Bones

3.4. Supports the body

4. Respiratory System

4.1. Nose

4.1.1. The nose takes in air

4.2. Windpipe

4.2.1. The air travels through the windpipe

4.3. Lungs

4.3.1. Gas exchange occurs at the lungs

5. Circulatory System

5.1. Heart

5.1.1. Pumps blood to all parts of the body

5.2. Blood

5.2.1. Transports oxygen, digested food and water to all parts of the body

5.2.2. Also transports waste to be removed

5.2.3. Also transports carbon dioxide to the lungs to be removed

5.3. Blood vessels

5.3.1. Tubes which allow blood to pass through