Your respiratory system is made up of your lungs, airways (trachea, bronchi and bronchioles), diaphragm, voice box, throat, nose and mouth. Its main function is to breathe in oxygen and breathe out carbon dioxide. It also helps protect you from harmful particles and germs and allows you to smell and speak.

• What are the 3 main differences of arteries and veins?
The arteries and veins have three main differences.
1. Arteries carry blood away from the heart, while the veins carry blood towards the heart.
2. With the exception of pulmonary blood vessels, arteries carry oxygenated blood, while veins carry deoxygenated blood.
3. Arteries have t…[Read more]

The arteries and veins have three main differences.
1. Arteries carry blood away from the heart, while the veins carry blood towards the heart.

2. With the exception of pulmonary blood vessels, arteries carry oxygenated blood, while veins carry deoxygenated blood.

3. Arteries have thick walls with muscle tissues. Veins have thinner walls and…[Read more]

Parts of the Mouth
– Your mouth allows you to speak, breathe, and chew. Listed below are specific parts of the mouth and where they are located.

Hard palate- The front of the roof of the mouth.

Soft palate- The back of the roof of the mouth.

Uvula- The soft tissue that hangs from the soft palate.

Tonsils- Lumps of tissue on the sides of the…[Read more]

Your digestive system breaks down and absorbs nutrients from the food and liquids you consume to use for important things like energy, growth and repairing cells.

The nervous system includes the brain, spinal cord, and a complex network of nerves. This system sends messages back and forth between the brain and the body.