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The Respiratory System By: Chloë Durfee Sydney Modder Ramya Ramesh Megumi Sharma Chase Damis Larynx/Pharynx Larynx (Voice Box) Pharynx (throat) • Connects pharynx to trachea • Provides airway • Prevents food from entering respiratory tract • Produces sound • Provides passageway for respiratory and digestive tracts • Tube like structure that connects nasal and oral cavities to larynx • Coordinates breathing and swallowing while eating Larynx/Pharynx Epiglottis • Blocks food and liquids from entering the trachea • Spoon-like structure Epiglottis Lungs •Pair of spongy, air-filled organs. •Located on either side of thorax. •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. Lungs Trachea (Windpipe) • This is the tube that air passes through in order to get to the bronchi and then the lungs. Trachea (Windpipe) 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 Alveoli/Bronchi Thoracic Diaphragm • Expels urine/feces • Prevents acid reflux • Contracts and compresses when humans inhale Thoracic Diaphragm Processes 1. Pulmonary VentilationAir in and out of lungs (Gases are refreshed) 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 Zones Respiratory Zone-Site of gas exchange Conducting Zone-Where respiratory organs cleanse air 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.