PPT LESSON SCIENCE-6- QUARTER 2 WEEK-2 GRADE 6

HUMAN BODY SYSTEM

1. WEEK 2 DAY 1 6 SCIENCE

2. HOW THE ORGANS OF EACH ORGAN SYSTEM WORK TOGETHER

3. Reviewing Previous Lesson Review on past lesson about the different system in the body discussed previously

4. Look at the picture.

5. What can you say about the picture? Have you been in a quiet place like this? Can you describe the air you breath in that place? Have you ever wondered where this fresh air travel inside our body?

6. Today we will learn the parts and functions of our respiratory system.

7. The human body is a complex, highly organized structure made up of unique cells that work together to accomplish the specific functions necessary for sustaining life.

8. The Respiratory System When the respiratory system is mentioned, people generally think of breathing, but breathing is only one of the activities of the respiratory system. The body cells need a continuous supply of oxygen for the metabolic processes that are necessary to maintain life. The respiratory system works with the circulatory system to provide this oxygen and to remove the waste products of metabolism. It also helps to regulate pH of the blood.

9. Main Parts of the Respiratory System  Nasal Cavity The nostrils are the opening into the nasal passages that are lined with hairs. Nostrils have cilia. The cilia filter the dust and other particles present in the air. They also protect the nasal passages and other regions of the respiratory tract. The blood vessels inside the lining of the nose arms and humidifies the air.

10.  Pharynx and Larynx The pharynx is also called the throat. It is the common passageway for both food, water, and air. Below the epiglottis is the larynx or voice box. The larynx contains two vocal cords that vibrate when air passes by them. With our tongue and lips, we convert these vibrations into speech. The larynx is the main site for sound production. Two ligament called vocal chords can be stretched in varying extent across the opening to the larynx.

11.  Trachea, Bronchi, Bronchioles, and Alveoli The trachea is known as windpipe. It is made up of muscles and elastic fibers with rings of cartilage lined with cilia. The trachea filters the air we inhale and branches into the bronchi . The bronchi are two tubes that carry the air into the lungs. Bronchial tubes also branch into smaller tubes called bronchioles. Alveoli are grape-like structures at the end of bronchioles . The alveoli have thin walls that are surrounded by blood vessels.

12. Lungs The lungs are located in the chest cavity surrounded by the rib cage. The lungs are the main organ of the respiratory system. This is where exchange of gases occurs. This is the site where oxygen is taken in and carbon dioxide is expelled out.

13.  Diaphragm The diaphragm is a dome-shaped muscle that controls breathing, which is located at the bottom of the lungs. During respiration, the diaphragm flattens out and pulls forward, making more space for the lungs. When we inhale or breathe in, the diaphragm contracts and pulls downward. When we exhale or breathe out, the diaphragm expands.

14. List down activities that you observe at home that shows the value or use of your respiratory system. Write this in your notebook.

15. What are the parts of the respiratory system?

16. Study the picture of the respiratory system below. Label the parts correctly. Do this on your answer sheet.

17. Thank you for Listening!

18. WEEK 2 DAY 2 6 SCIENCE

19. HOW THE ORGANS OF EACH ORGAN SYSTEM WORK TOGETHER

20. Directions: Arrange the correct pathway of the air in the lungs by ranking 1 to 8.

21. Reviewing Previous Lesson Recall the parts of the respiratory system discussed yesterday.

22. The respiratory system plays a vital role in the human body.

23. The human body is a complex, highly organized structure made up of unique cells that work together to accomplish the specific functions necessary for sustaining life.

24. The Respiratory System When the respiratory system is mentioned, people generally think of breathing, but breathing is only one of the activities of the respiratory system. The body cells need a continuous supply of oxygen for the metabolic processes that are necessary to maintain life. The respiratory system works with the circulatory system to provide this oxygen and to remove the waste products of metabolism. It also helps to regulate pH of the blood.

25. Main Parts of the Respiratory System  Nasal Cavity The nostrils are the opening into the nasal passages that are lined with hairs. Nostrils have cilia. The cilia filter the dust and other particles present in the air. They also protect the nasal passages and other regions of the respiratory tract. The blood vessels inside the lining of the nose arms and humidifies the air.

26.  Pharynx and Larynx The pharynx is also called the throat. It is the common passageway for both food, water, and air. Below the epiglottis is the larynx or voice box. The larynx contains two vocal cords that vibrate when air passes by them. With our tongue and lips, we convert these vibrations into speech. The larynx is the main site for sound production. Two ligament called vocal chords can be stretched in varying extent across the opening to the larynx.

27.  Trachea, Bronchi, Bronchioles, and Alveoli The trachea is known as windpipe. It is made up of muscles and elastic fibers with rings of cartilage lined with cilia. The trachea filters the air we inhale and branches into the bronchi . The bronchi are two tubes that carry the air into the lungs. Bronchial tubes also branch into smaller tubes called bronchioles. Alveoli are grape-like structures at the end of bronchioles . The alveoli have thin walls that are surrounded by blood vessels.

28. Lungs The lungs are located in the chest cavity surrounded by the rib cage. The lungs are the main organ of the respiratory system. This is where exchange of gases occurs. This is the site where oxygen is taken in and carbon dioxide is expelled out.

29.  Diaphragm The diaphragm is a dome-shaped muscle that controls breathing, which is located at the bottom of the lungs. During respiration, the diaphragm flattens out and pulls forward, making more space for the lungs. When we inhale or breathe in, the diaphragm contracts and pulls downward. When we exhale or breathe out, the diaphragm expands.

30. Directions: Fill in the missing organs in the box. Write the answers on the box provided .

31. Match the parts of the respiratory system in Column A with its description in column B.

32. Thank you for Listening!

33. WEEK 2 DAY 3 6 SCIENCE

34. HOW THE ORGANS OF EACH ORGAN SYSTEM WORK TOGETHER

35. Reviewing Previous Lesson Observe the pictures. What are they doing?

36. Do you ever wonder how you could walk on a beam without losing your balance? Why is it that when you touch something hot, you pull your hand away even before you even think about it?

37. The Nervous System and its Function The Nervous System is the control unit of the body . Its function is to integrate and coordinate bodily activities. It coordinates the activities and communicates with the sense organs and the other body systems through the wire like nerve cells or neurons that transmits messages passing through spinal cord to the brain and back to the nerve cells or neurons for the interpretation of the senses .

38. The brain is an amazing organ that performs different functions such as processing memory, judgement , and reasoning. It controls body movement, emotions , feelings and vital sign of life such as breathing. The brain has three main parts: cerebrum , cerebellum and the brainstem or the medulla oblongata. Another organ in the nervous system is the spinal cord. It a cord like material inside the backbone. It bridges impulse between the brain and the body. This means all the signals that go to and from the brain pass through the spinal cord and deliver it to the right muscles and senses .

39. Neuron is also another organ in the nervous system. It is a wire like organ that is found all over the body. Its main function is to deliver messages within the nervous system and between other body system. It is divided into three parts: axon, cell body and dendrites .Neurons can be classified based on the direction in which they send information .These can be sensory neurons , motor neuron and inter neuron .

40. Answer the questions by writing True or False . If it is false, replace the underlined word with the correct word to make the statement correct. __________1. The nervous system is the control system of the body. _________ 2. The nerve cells is the basic unit of the nervous system. _________ 3. The brain is found all over your body . _________ 4. The brain has three main parts : cerebrum , cerebellum and the medulla oblongata

41. Name the parts of the nervous system and its function.

42. Number the sentence from 1-5 to show the direction of the information to reach the desired response to the given stimulus. Write the numbers on the lines. _______ 1. The sensory nerves send the impulse to the brain through the spinal cord.

43. _______ 2. The receptors (eyes) receive information from the environment. _______ 3. The motor nerves carry the impulse the effectors. _______ 4. The brain interprets the impulse. _______ 5. The message goes back to the spinal cord to the motor nerves.

44. Thank you for Listening!

45. WEEK 2 DAY 4 6 SCIENCE

46. HOW THE ORGANS OF EACH ORGAN SYSTEM WORK TOGETHER

47. Reviewing Previous Lesson

48. Living things have systems that control, regulate, and coordinate body processes.

49. The Nervous System and its Function The Nervous System is the control unit of the body . Its function is to integrate and coordinate bodily activities. It coordinates the activities and communicates with the sense organs and the other body systems through the wire like nerve cells or neurons that transmits messages passing through spinal cord to the brain and back to the nerve cells or neurons for the interpretation of the senses .

50. The brain is an amazing organ that performs different functions such as processing memory, judgement , and reasoning. It controls body movement, emotions , feelings and vital sign of life such as breathing. The brain has three main parts: cerebrum , cerebellum and the brainstem or the medulla oblongata. Another organ in the nervous system is the spinal cord. It a cord like material inside the backbone. It bridges impulse between the brain and the body. This means all the signals that go to and from the brain pass through the spinal cord and deliver it to the right muscles and senses .

51. Neuron is also another organ in the nervous system. It is a wire like organ that is found all over the body. Its main function is to deliver messages within the nervous system and between other body system. It is divided into three parts: axon, cell body and dendrites .Neurons can be classified based on the direction in which they send information .These can be sensory neurons , motor neuron and inter neuron .

52. What are the parts of the nervous system?

53. Directions: Identify the given parts in which organ system they belong. Write RS for Respiratory System and NS for Nervous System before the number.

54. _________1. Larynx _________2. Brain _________3. Lungs _________4. Nasal Cavity _________5. Cerebrum ________6. Pharynx ________7. Cerebellum ________8. Spinal Cord ________9. Diaphragm ________10. Trachea

55. Thank you for Listening!

56. WEEK 2 DAY 5 6 SCIENCE

57. HOW THE ORGANS OF EACH ORGAN SYSTEM WORK TOGETHER

58. Reviewing Previous Lesson

59. Look at the picture and let’s try to this activity.

60. Structure and Functions of the Central Nervous System The Central Nervous System (CNS) controls and coordinates the activities of the whole nervous system. It is composed of the brain and spinal cord. The skull and vertebrae enclose the CNS.

61. Fluid and tissue fill and insulate the brain and spinal cord. The central nervous system is like a telephone system with a central computer operator present to process incoming phone calls. It contains structures that receive and process numerous stimuli every minute.

62. The hypothalamus regulates homeostasis. Homeostasis enables an organism to maintain internal balance in the body. The thalamus serves as a central relay point for incoming nervous messages.

63. The Spinal Cord The spinal cord extends from the brain stem down to the buttock region. A bony vertebra that comprises the vertebral column protects it. It allows signals to be sent from the brain to the other parts of the body. It also receives messages from the different parts of the body to the brain.

64.  Somatic Nervous System (SNS) – includes all nerves controlling the muscular system and external sensory receptors.  Autonomic Nervous System – is a part of PNS consisting of motor neurons that control internal organs.  Sympathetic Nervous System – is involved in the fight or flight response.  Parasympathetic Nervous System – is involved in relaxation.

65. What are the parts of the brain? How important is our nervous system?

66. Thank you for Listening!