SCIENCE 91111111111111111111111 (2).pptx

SCIENCE

1. Respiratory and Circulatory Systems, Working with other Organ Systems

2. Rank the following activities according to the degree they require you to consume oxygen. __ sleeping __ climbing of trees __ walking to church __ playing video games __ singing

3. HUMAN RESPIRATORY SYSTEM

4. Respiration is the process of taking in oxygen from the environment and delivering it to the cells. At the same time, carbon dioxide is removed and taken out of the body.

5. Human Respiratory System - is responsible for the exchange of gases between humans and the environment.

6. The system is generally comprised of nose, pharynx, larynx, trachea, and the lungs.

7. ACTIVITY 2: THE LUNGS Objectives: a. Describe the key parts of the lungs b. Label the parts of the lungs

8. Procedure: 1. Read and analyze the paragraph below. 2. From the given picture identify and label the key parts of the lungs.

9. The lung is the vital organ responsible for breathing particularly gas exchange. The human body has 1 pair of lungs. Each lung has 2 lobes that have its own pleura-sac. Here are its important parts to work well: the main stem is the trachea , the large branching stems are the bronchi , and all the little stems are the bronchioles . The little circles like are air sacs or alveoli (alveolus in singular).

10. Guide Questions: 1. What fruit can you compare to the human lungs? How does it work? 2. How will you describe the feature of the lungs? 3. Would it be possible to work if only one lung is functioning?

11. ACTIVITY 3: THE FLOW OF THE AIR TO THE BODY Objectives: a. Draw the parts of the respiratory system b. Label the parts of the respiratory system c. Explain the flow of the air throughout the body d. Trace the flow of air in the body

12. Procedure: 1. After reading and understanding the concept below, draw the parts of the breathing system fitting the diagram below. Label each part 2. Trace the flow of the air by putting arrows on its parts.

13. Guide Questions: 1. How will you describe the pathway of the oxygen in the breathing system? 2. What will happen if one part of the system fails to carry out its function properly?

14. ACTIVITY 4: THE HUMAN HEART Objectives: a. Describe the parts of the heart b. Explain the functions of each part of the heart

15. Procedure: 1. Study the terms and functions. 2. Label the parts of the heart base on the information given. 3. Color the key parts of the heart.

16. KEY CONCEPTS 1. The chambers: Two atria – these are the receiving chambers of the heart. These receive blood through veins.

17. Right Atrium- It accepts blood from the body. Left Atrium - It accepts blood from the lungs.

18. Two ventricles- These chambers force the blood out into the arteries.

19. Right Ventricle- It pumps blood towards the lungs. Left Ventricle- It pumps blood towards the body.

20. The valves: These prevent the backward flow of the blood.

21. e. Tricuspid valve- found between the right atrium and right ventricle f. Bicuspid valve- found between the left atrium and left ventricle g. Pulmonary valve- found at the base of the pulmonary artery h. Aortic valve- at the base of the aorta

22. The vena cavas

23. Superior vena cava- conveys blood from the upper extremities towards the heart Inferior vena cava- conveys blood from the lower extremities towards the heart

24. Other parts Septum- It divides the right and left chambers. Aorta- The largest artery. It conveys blood from the heart to different parts of the body.

25. Pulmonary artery- It conveys oxygen-poor blood from the heart to the lungs. Pulmonary vein- It conveys oxygen-rich blood from the lungs to the heart.