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Warm-Up • Name one organ in the respiratory system and state its significance in the human body • State three things you know about the respiratory system. The Respiratory System By: Chloë Durfee Sydney Modder Ramya Ramesh Megumi Sharma Chase Damis Larynx/Pharynx Epiglottis Larynx (Voice Pharynx • Blocks foodBox) and liquids from (throat) entering the • Connects • Provides passageway for trachea pharynx to trachea respiratory and digestive •• Spoon-like tracts Provides airwaystructure • Tube like structure that • Prevents food from connects nasal and oral entering respiratory tract cavities to larynx • Produces sound • Coordinates breathing and swallowing while eating TracheaLungs (Windpipe) ••Pair Thisofisspongy, the tubeair-filled that air passes organs.through in order toon geteither to theside bronchi and then the •Located of thorax. lungs. •Covered by thin tissue called pleura. •Pull in oxygen and absorbs it into linings of lungs. •Pushes oxygen into chambers of the heart so oxygen travels throughout the body. Alveoli/Bronchi Bronchi • Large tubes leading from trachea to the lungs • Move air in and out of lungs • Made of cartilage • Cleans, warms, and moistens incoming air Alveoli • Tiny sacs in lungs • 300-400 million in lungs • Oxygenated and deoxygenated blood surrounds the alveoli surface • Gives oxygen to surrounding capillaries • Oxygen naturally moves from alveoli to bloodstream Thoracic Diaphragm • Expels urine/feces • Prevents acid reflux • Contracts and compresses when humans inhale ProZones cesses Respiratory 1. Pulmonary Zone-Site Ventilationof gas exchange Air in and out of lungs (Gases are refreshed) Conducting Zone-Where respiratory organs cleanse air 2. External RespirationO2 from lungs to CO2 3. Transport of Respiratory GasesMoves O2 from lungs to blood and CO2 from tissues to blood 4. Internal RespirationOxygen from blood to tissue cells. Carbon dioxide from tissue cells to blood Major Functions/ How Respiratory Functions with other Systems How It functions Functionsof With Systems: Major the Other respiratory system are to: •It works with the circulatory system to oxygenate blood, • Introduce oxygen into the blood stream which delivers oxygen to organs and tissues that need it. • Not let food system go anywhere butthe thebrain digestive •It works with the nervous because sendstract signals to the lungs to breathe. Breathing Processes • 1. 2. 3. 4. 5. 6. 7. • 1. 2. 3. Respiration: Oxygen moves through nose/mouth into trachea. Goes into bronchi (connected to lungs). Moves into smaller bronchioles. Lungs and diaphragm contract. Chest cavity relaxation. Oxygen travels to alveoli. Exchanged for carbon dioxide. New oxygen transported by red blood cells throughout body. Expiration: During use, carbon dioxide is created. Moves inside veins to lungs. Exchanged in alveoli. Carbon dioxide goes up trachea and out of nose and mouth. END Thank you for watching