SCIENCE 9 Jaime S. Crispino RESPIRATORY AND CIRCULATORY SYSTEMS, WORKING WITH OTHER ORGAN SYSTEMS MOST ESSENTIAL LEARNING COMPETENCY: Explain how the respiratory and circulatory systems work together to transport nutrients, gases, and other molecules to and from the different parts of the body. Objectives: 1. Identify the parts of the respiratory system. 2. Describe the function of each part of the respiratory system. 3. Summarize the passage of air through the respiratory system. Let’s check this out! Swimming in the pool Sitting on the ground RESPIRATORY SYSTEM Breathing Why isisbreathing so that What in the breath important? we need so much? RESPIRATORY SYSTEM It is involved in the intake and exchange of an Oxygen (Ogases 2) between Carbon organism and the environment. Dioxide (CO2) Breaks down food to use for energy Waste product Parts and function of the Respiratory System Inside the the lung, the through bronchi branches out Theenters epiglottis allows air to pass Air body the from nose the called bronchioles. larynx to the long tube in the chest cavity and mouth called the trachea windpipe. When air enters theornose, mucus that lines The trachea branches two large tubes the nasal or nasal warms Ending in cavity a clusters of into tinypassages air sacs called called bronchi or bronchial tubes and and moistens air. of oxygen alveoli for gasthe exchange carbon dioxide The air passes the opening called lungs are athrough pair of spongy, air-filled larynx, located which ison known voice boxchest. organs eitherasside of the MOUTH AND NOSE NASAL CAVITY ALVEOLI LARYNX TRACHEA BRONCHI LUNGS BRONCHIOLES Activity 1: Parts and Function of the Respiratory System Study the diagram to identify the parts of the respiratory system. Then, describe the function of the respiratory system using your own words. Write your answer on the space provided. D Parts Function (in your own words) A____________________________________ ____________________________________ Function (in your own words) B____________________________________ _________________________________________________________________________ ____________________________________ _________________________________________________________________________ C____________________________________ _________________________________________________________________________ _________________________________________________________________________ ____________________________________ E _________________________________________________________________________ F _________________________________________________________________________ G _________________________________________________________________________ Parts A B C To check your understanding: THANK YOU FOR WATCHING!!