We will now learn about the three most important systems in the human body: the nervous system, the respiratory system and the circulatory system. We will then discuss diseases and injuries that impair the proper functioning of these systems.

The nervous system is the system that includes the brain and all the nerves in the human body. Its main function is to regulate all of our actions - voluntary and involuntary.

The respiratory system is the system responsible for the exchange of gases in our bodies.

The cardiac system is divided into three parts: pump (heart), pipes (blood vessels) and fluid (blood).

Contrary to popular belief, the purpose of resuscitation is not to “revive” a person who has died.