305123-Grade 9-STE-SCIENCE
Our bodies are like complex machines and depend on many different body systems in order to function properly. In this module, you will explore each important aspect of two key body systems: the respiratory and circulatory systems. Beginning with the respiratory system, you will understand the complex parts involved in the process of breathing, from our major air-intake passageway, the nose, to the smallest spaces of the lungs, called alveoli, where a vital exchange of oxygen and carbon dioxide occurs. It is here that the respiratory and circulatory systems meet. In this section of the module, you will learn about the anatomy of the heart and how it works, the structure and function of various blood vessels, the cellular components of blood and their purposes, as well as what blood pressure is and what it reveals. As this concludes, you will examine the link between these two amazing body systems, and understand the importance of maintaining them through exercise and a healthy diet.
305123-GRADE 9- STE- ENGLISH
ENGLISH 9 FOR PRACTICE ONLY TO BE RE-UPLOAD