According to the chapter, what is stated about "The four chambers" in Digestive And Excretory System?
It passes through nostrils, pharynx, trachea and bronchi and reaches the lungs (inhalation).
For example, physical activities are based on motor movements and their co-ordination.
The four chambers are left and right atria (singular atrium) and left and right ventricles.
Circulatory system circulates nutrients and oxygen to all parts of the body.