Respiratory System.pdf

Science 9 Respiratory and Circulatory systems Learning Objective At the end of the lesson, you should be able to: determine the parts and functions of the respiratory system.  Activity! Answer YAAAAS if the statement is Correct And NAUUR if the statement is Wrong  Respiration t...

Science 9 Respiratory and Circulatory systems Learning Objective At the end of the lesson, you should be able to: determine the parts and functions of the respiratory system.  Activity! Answer YAAAAS if the statement is Correct And NAUUR if the statement is Wrong  Respiration the process involved in the exchange of oxygen and carbon dioxide in organisms. YAS or NAUR? Respiration the process involved in the exchange of oxygen and carbon dioxide in organisms. YAS! !  Breathing A process where the air from the atmosphere is transported into the Heart. YAS or NAUR?  Breathing A process where the air from the atmosphere is transported into the Heart.NAUR !! When we breath we Inhale oxygen and we exhale Carbon dioxide. YAS or NAUR? When we breath we Inhale oxygen and we exhale Carbon dioxide. YAS! ! Lungs are the main organ for respiration. YAS or NAUR? Lungs are the main organ for respiration. YAS! ! Is this the formula for Cellular Respiration? YAS or NAUR? Is this the formula for Cellular Respiration? YAS! !  Science 9 Respiratory and Circulatory systems Respiration The process involved in the exchange of oxygen and carbon dioxide in organisms. It can be divided into breathing and cellular respiration. Stages of Respiration Breathing A process where the air from the atmosphere is transported into the lungs. At the same time, carbon dioxide from the organism is returned to the environment. Stages of Respiration Cellular Respiration The cells convert energy from glucose from the food that we eat into adenosine triphosphate (ATP). Parts of f the Respiratory System Parts of f the Respiratory System Upper Respiratory Tract Nostrils serve as the opening to the respiratory tract. Pharynx connects mouth and nasal cavity to the esophagus. Parts of f the Respiratory System Upper Respiratory Tract Epiglottis is a flap of cartilage that opens during respiration. Larynx, also known as the voice box, is involved in sound production. Parts of f the Respiratory System Lower Respiratory Tract Trachea connects the larynx and pharynx to the lungs. Bronchi are air passageway from trachea to the lungs. Parts of f the Respiratory System Lower Respiratory Tract The bronchi branch into smaller tubes known as Bronchioles. Lungs are the main organ for respiration. Parts of f the Respiratory System Lower Respiratory Tract Diaphragm is a muscle that expands or contracts when breathing. Parts of f the Respiratory System Lower Respiratory Tract Alveoli are tiny sac-like structures present at the end of bronchioles. ACTIVITY!! Label the parts! Label the parts of f the Respiratory System 1 2 8 3 4 9 5 6 7 Label the parts of f the Respiratory System 1. Nostrils Bronchioles 8. 2. Epiglottis Pharynx 3. Larynx 4. 9. Alveoli Trachea 5. 6. Lungs 7. Diaphram Assessment Respiratory and Circulatory systems 1. What is the primary function of respiration? a) To digest food b) To exchange oxygen and carbon dioxide in organisms c) To produce sound d) To circulate blood 2. What are the two main stages of respiration? a) Digestion and excretion b) Breathing and cellular respiration c) Inhalation and exhalation d) Photosynthesis and cellular respiration 3. What occurs during breathing? a) Air is transported from the atmosphere into the lungs b) Food is broken down into glucose c) ATP is converted into glucose d) Blood circulates through the heart 4. During cellular respiration, what is glucose converted into? a) Carbon dioxide b) Water c) Oxygen d) Adenosine triphosphate (ATP) 5. Which structure serves as the opening to the respiratory tract? a) Pharynx b) Larynx c) Nostrils d) Bronchi 6. What is the role of the epiglottis during respiration? a) To produce sound b) To connect the mouth to the esophagus c) To serve as an opening to the respiratory tract d) To open and close the airway 7. What is the larynx also known as? a) Voice box b) Windpipe c) Food pipe d) Diaphragm 8. Which structure connects the larynx and pharynx to the lungs? a) Bronchi b) Trachea c) Alveoli d) Diaphragm 9. What are the small tubes that the bronchi branch into? a) Alveoli b) Capillaries c) Bronchioles d) Nostrils 10. What is the primary muscle involved in breathing? a) Heart b) Lung c) Diaphragm d) Trachea 10. What is the primary muscle involved in breathing? a) Heart b) Lung c) Diaphragm d) Trachea  1.b) To exchange oxygen and carbon dioxide in organisms 2.b) Breathing and cellular respiration 3.a) Air is transported from the atmosphere into the lungs 4.d) Adenosine triphosphate (ATP) 5.c) Nostrils 6.d) To open and close the airway 7.a) Voice box 8.b) Trachea 9.c) Bronchioles 10.c) Diaphragm Thank you for listening  Science 9 Respiratory and Circulatory systems Learning Objective At the end of the lesson, you should be able to: Explain the mechanism of respiration. Respiration Respiration that involves gas exchange in the respiratory system can be divided two major steps: Breathing Inhalation Exhalation Gas Exchange In the lungs Two Phases of Breathing Inhalation It is when the diaphragm contracts and induces the decrease in air pressure within the lungs. This difference in air pressure between the lungs and the atmosphere causes air to rush into the lungs. Two Phases of Breathing Exhalation As a person breathes out, the diaphragm relaxes which decreases the size of the chest leading to the increase in air pressure in the lungs. The higher pressure in the lungs compared to the atmosphere pushes air to rush out of the lungs. Gas Exchange The site of gas exchange between air and the blood is the alveoli. The mechanism behind gas exchange is diffusion Lung Capacity Lung capacity is the volume of air associated with the inhalation and exhalation process. The adult human male has a total lung capacity of 6 liters of air. The average human respiratory rate is 30–60 breaths per minute at birth, decreasing to 12–20 breaths per minute in adults. Lung Capacity In measuring the lung capacity, the following variables are considered: Vital capacity (VC) is the volume of air exhaled out after the deepest inhalation. Residual volume (RV) is the volume of air remaining in the lungs after a maximal exhalation. Trace the pathway of air during inhalation and exhalation where 1 is the entry and 7 is the exit. Trace the pathway of air during inhalation and exhalation where 1 is the entry and 7 is the exit. Inhalation Exhalation 1.Nostrils 1.Alveoli 2.Pharynx 2.Bronchioles 3.Larynx 3.Bronchi 4.Trachea 4.Trachea 5.Bronchi 5.Larynx 6.Bronchioles 6.Pharynx 7.Alveoli 7.Nostrils Oxygen is vital for our cells to function. It is one of the main reasons why we breathe. What will happen if our breathing was cut?