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Studied by 707 peopleNoteStudied by 17 peopleNoteStudied by 146 peopleNoteStudied by 15 peopleNoteStudied by 7 peopleNoteStudied by 22 peopleRespiratory system
Identify structures and functions in the respiratory system
Oral/nasal cavity | Bronchial tree | Alevoli | |
Structure | Enzyme called: Lysozyme Muscous lining epithelial lining goblet cells | Consists of Larynx, trechea, Bronchus,Bronchioles Lined with cilited mucous membrane | Microscopic clusters of airsacs at the end of bronchioles |
Function | Air entrance
| Keeps cleaning and taking air - because of ciliated mucous membran traps dirt & microbes | Gas exchange takes place in alveoli |
Lysozyme - nasal secretion destroys some bacteria (with anti-bacterial enzyme)
Goblet cells - clear, sticky mucus
Location epithelial lining
Mucous lining
Function: Contain mucus which trap dirt particles and microbes before they enter lungs
Cilia
Function: Sweep dirty mucus up the trachea into the throat
Explain how each of the structures work together to transport O2 and CO2 around the body - Gas exchange
Respiration | Transport of oxygen from air to tissues Transport of carbon dioxide from tissues to the air |
Internal respiration | Exchange of Os and CO2 between blood and tissues |
External respiration | Movement of O2 and CO2 between lungs and bloodstream |
Inhalation | Exhalation | |
Diaphragm | Contracts, flatten and moves down | Relaxes and moves upwards |
External intercostal muscles | Contract | Relax |
Ribcage | Moe up and out | Moves down and in |
Thoracic volume | Increases | Decreases |
Thoracic pressure | Decreases (lower than atmospheric pressure) | Increases (higher than atmospheric pressure) |
Movement of air | Into lungs | Out of lungs |
NoteStudied by 707 peopleNoteStudied by 17 peopleNoteStudied by 146 peopleNoteStudied by 15 peopleNoteStudied by 7 peopleNoteStudied by 22 people