1 / 9

Respiratory System

Respiratory System. Take a deep breath and relax. Structure. Nose Pharynx Larynx Trachea Bronchi Alveoli Lungs. Nose- lined with mucous membranes. Air is warmed, filter and moistened Pharynx or throat- 3 sections: upper, middle and lower. Esophagus branches off here

liam
Download Presentation

Respiratory System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Respiratory System Take a deep breath and relax

  2. Structure • Nose • Pharynx • Larynx • Trachea • Bronchi • Alveoli • Lungs

  3. Nose- lined with mucous membranes. Air is warmed, filter and moistened • Pharynx or throat- 3 sections: upper, middle and lower. Esophagus branches off here • Larynx- voicebox. Epiglottis closes the opening during swallowing • Trachea- windpipe, lined with c-shaped cartilaginous rings

  4. Bronchi (singular bronchus)- left and right • Bronchioles- smaller divisions of the bronchi • Bronchioles end in small air sacs called alveoli • 500 million alveoli- one sqamous cell layer thick

  5. Lungs: 2 unequal lobes • Covered in a membrane called the pleura

  6. Breathing = ventilation • Two stages: inspiration and experation • Diaphragm and intercostal muscles contract, thoracic cavity enlarges

  7. External respiration: exchange of O2 and CO2 between lungs and bloodstream • Internal respiration: exchange of CO2 and O2 between cells and bloodstream

  8. Asthma • Bronchitis • COPD- chronic obstructive pulmonary disease • Emphysema • Influenza • Laryngitis • Lung cancer • Tuberculosis

More Related