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Breathing

Respiratory System

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RESPIRATORY SYSTEM SUMMARY Nitrogen 78% COMPOSITION OF AIR Oxygen 21% Argon 0.93% CO2 0.038% Others 0.008% INHALED & EXHALED AIR inhaled air nitrogen (78%) oxygen (20%) carbon dioxide (0.04%) Other gases exhaled air nitrogen (78%) oxygen (16%) carbon dioxide (4%) Other gases Exhaled air contains less O2, but much more CO2 Respiratory system Mechanical respiration Inhalation Exhalation Cellular respiration Glucose+O2?CO2+H2O+ATP(energy) Respiratory system Mechanical respiration Inhalation Exhalation Cellular respiration Glucose+O2?CO2+H2O+ATP(energy) MECHANICAL RES: INHALATION ? Also termed inspiration ? Diaphragm contracts and flattens. ? Internal intercostal muscles relaxes

Biology Lung

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THE ?LUNG ? MODEL ? OBJECTIVES ?? To create a lung model to show the effects of inhalation and exhalation and the effects of respiratory diseases on the function of lungs. PARTS OF THE RESPIRATORY SYSTEM 1. ?Trachea ? 2. ?Lungs ? 3. ?Diaphragm ? RECAP ?I: ?INHALATION ? 1.?Diaphragm ? contracts ?and ? ?a?ns ? 2.?Rib ?cage ?moves ?up ? and ?out ? ? ?? Thoracic ?cavity ? enlarges ? ?? Lower ?pressure ? within ?the ?lungs ? ?? Air ?enters ?the ? lungs ? RECAP ?II: ?EXHALATION ? 1.?Diaphragm ?relaxes ? and ?moves ?up ? 2.?Rib ?cage ?moves ? ? down ?and ?in. ? ? ?? Rib ?cage ?presses ? on ?the ?lungs ? ?? Air ?is ?forced ?out ?

Gas Exchange

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Topic 6.5 Gas Exchange IB Objective Students will know that the lungs are actively ventilated to ensure that gas exchange can occur passively Distinguish between ventilation, gas exchange and cell respiration Explain the need for a ventilation system I. All Living Things Respire Why living things must respire (breathe): 1. Cellular Respiration ? controlled release of energy in the form of ATP from organic processes in the cell C6H12O6 + O2 ---> 6CO2 + 6H20 + ATP 2. Gas Exchange -- Exchange of gases (Oxygen, Carbon Dioxide) between an organism and it environments 3. Ventilation - process of "changing" or replacing gas (Oxygen, Carbon Dioxide) in a space (ex: lungs) II. Ventilation A. Single celled organisms can easily diffuse gas in and out of a cell

Respiratory System PPT

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By: Chlo? Durfee Sydney Modder Ramya Ramesh Megumi Sharma Chase Damis The Respiratory System Larynx (Voice Box) Connects pharynx to trachea Provides airway Prevents food from entering respiratory tract Produces sound Pharynx (throat) 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 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.

Respiratory System PPT

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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. By: Chlo? Durfee Sydney Modder Ramya Ramesh Megumi Sharma Chase Damis The Respiratory System Epiglottis Blocks food and liquids from entering the trachea Spoon-like structure Larynx/Pharynx Pharynx (throat) 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 (Voice Box) Connects pharynx to trachea Provides airway Prevents food from entering respiratory tract Produces sound Trachea (Windpipe) This is the tube that air passes through in order to get to the bronchi and then the lungs.
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