Specifically respiratory system ppt lesson
- 2. Mini-activity Hold your breath as long as you can! Take in mind what your body is telling you as you hold your breath!
- 3. Mini-activity Hold your breath as long as you can! Take in mind what your body is telling you as you hold your breath!
- 4. Holding your breath What did you notice? Did you feel pain anywhere? What did you think happened when you couldn’t breathe?
- 5. Internal Systems The human body is made up of organs which are made up of tissues Organs = structures in your body that have specific roles within the body EX: Heart, Lungs, Brain, and Skin Tissues = a group of cells that work together to perform a specific function EX: Epithelial, connective, muscle, and nervous
- 6. Thoracic Cavity Thoracic Cavity = giant area in the middle of the body that contains the heart and the lungs
- 7. Respiratory System All animals exchange gas taking in Oxygen and releasing carbon dioxide through cellular respiration Respiration = the process of breathing taking in oxygen and releasing carbon dioxide
- 8. Parts of the Respiratory System
- 9. Mouth Area Nasal Cavity = area in which air can enter through the nose and filtered out by nose hairs Oral Cavity = the term to describe the mouth Pharynx = area in which the nasal and oral cavity join Epiglottis = small “lever” that controls whether things go down your trachea or your digestive system
- 10. Down the Throat Larynx = The “voicebox” below the pharynx Trachea =region that connects Larynx to the lungs
- 11. Trachea The trachea contains C-shaped cartilage rings - They
- 12. In the lungs Bronchus/Bronchi = passageway from the trachea to the lungs Bronchioles = smaller tubes past the bronchi leading to alveoli Alveoli = tiny air sacs that exchanges oxygen with blood
- 13. Alveoli Gas exchange - Alveoli exchange oxygen with blood through diffusion - Oxygen in, carbon dioxide out - Carbon dioxide is toxic to humans in high quantities
- 14. Surfactant - Detergent that reduces the surface tension of the alveoli so it doesn’t collapse → Babies are watched to ensure healthy Respiratory system
- 15. Breathing Process Inspiration/Inhalation Air moves from higher to lower pressure If air pressure less in lungs than air → Lungs
- 16. Breathing Process Inspiration/Inhalation and Exhalation/Expiration Diaphragm - contracts and moves downwards by external intercostal muscles → increase in volume of chest cavity → Air goes in - Expands and moves upwards by internal intercostal muscles → decrease in volume of chest cavity → Air goes out
- 17. Pleural Membranes Pleural membranes = small membrane outside of the lungs that help protect the lung from friction against the rib cage
- 18. Direct Inhalation and Exhalation 1. Oral and Nasal Cavity 2. Epiglottis/Pharynx 3. Larynx 4. Trachea 5. Bronchi 6. Bronchioles 7. Alveoli
- 19. 2 Lungs of your body Right lung - Contains 3 lobes ensure you know they are on the right side Left Lung - Contains 2 lobes, 1 less to fit the heart
- 20. Breathing Adaptation - Human breathing can change depending on their situation 1. High altitudes (low air pressure) → increased red blood cells and 2. Deep Water Diving (High Pressure)
- 21. Gill Respiratory Systems - There is oxygen in water and fish are able to get oxygen from them
- 22. Gill Respiratory Systems - Water will flow through the gills and oxygen will diffuse through the gills to the bloodstream
- 23. Bird Respiratory System 1. 1st Inhale air moves through to posterior air sacs 2. 1st exhale → air moves to lungs 3. 2nd Inhale → air moves to front air sacs 4. 2nd Exhale → air moves outside of mouth of birds 1 way continuous flow
- 24. Insects Respiratory System - Insects use spiracles that open up in their body to let air in and contact their circulatory system
- 25. Respiratory Diseases Bronchitis = swelling of bronchi and bronchioles from viral/bacterial infection or irritants like smoke Bronchial Asthma = inflammation of bronchi and bronchioles from an allergic reaction - Puffers to help deal with these issues Carbon Monoxide = will prevent your blood from taking in oxygen → cannot take oxygen and bring oxygen to cells
- 26. Exit Ticket Questions How does your diaphragm move when you inhale air? When you exhale air? What’s the difference between how we breathe and gills? What are the parts of the Respiratory System
- 28. Lung Cancer
- 29. - Diacetyl