1 / 10

Respiratory System

Respiratory System. Function. Gas exchange between air, blood, and tissues Oxygen in and carbon dioxide out Speech Coughing, sneezing, hiccupping, yawning. Important structures. Nose/mouth : openings through which air can come in Pharynx : (throat) passageway for both food and air

eamon
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

  2. Function • Gas exchange between air, blood, and tissues • Oxygen in and carbon dioxide out • Speech • Coughing, sneezing, hiccupping, yawning

  3. Important structures • Nose/mouth: openings through which air can come in • Pharynx: (throat) passageway for both food and air • Larynx: (voice box) vocal cords, speech • Trachea: (windpipe) tube from larynx to lungs

  4. Lungs • Bronchi: the 2 branches leading to the lungs • Bronchioles: smaller branches within each lung • Alveoli: small sacks surrounded by capillaries; gas exchange happens here

  5. Gas exchange • Alveoli and capillaries • Blood cells in single file • Diffusion • High CO2 inside blood cells, low CO2 in alveolus • High O2 in alveolus, low O2 in blood cell

  6. Breathing • Movement of air into and out of the lungs • Ventilation = inhalation + exhalation • Diaphragm • Contracts when inhaling (pulled down) lungs expand • Relaxes when exhaling (pushed up)  lungs push air out

More Related