Gaseous Exchanges in the Lungs

Description

Mind Map on Gaseous Exchanges in the Lungs, created by gnatzo on 02/03/2014.
gnatzo
Mind Map by gnatzo, updated more than 1 year ago
gnatzo
Created by gnatzo about 11 years ago
26
0

Resource summary

Gaseous Exchanges in the Lungs
  1. The THORAX is the upper part of the body (chest, etc.), the ABDOMEN is the lower part (stomach, etc.) Between these is a muscle called the DIAPHRAGM.
    1. The diaphragm is below the lungs.
    2. BREATHING OUT
      1. Intercostal muscles RELAX
        1. Ribs 'move down'.
          1. Diaphragm relaxes; becomes more of a curve
            1. This causes the opposite effect to breathing in. The volume decreases and the pressure increases, causing air to be pushed out
          2. BREATHING IN
            1. Intercostal muscles CONTRACT
              1. Ribs 'move upwards and outwards'.
                1. Diaphragm contracts; becomes a more horizontal shape below the lungs.
                  1. These cause the lungs to expand, they have a higher volume and low pressure. This low pressure is unbalanced with the higher pressure outside the lungs, and therefore air is drawn in
                2. Within the lungs is a network of tubes through which air is able to pass. Air is firstly warmed, moistened and filtered as it travels through the mouth and nasal passages. It then passes through the trachea and down one of the two bronchi and into one of the lungs.
                  1. Gas Exchange
                    1. the 'swapping’ of gases between the alveolar air and the blood
                    2. Ventilation
                      1. The movement of air out and into the lungs.
                      Show full summary Hide full summary

                      Similar

                      CHEMISTRY C1 5
                      x_clairey_x
                      A-level Psychology Revision
                      philip.ellis
                      French diet and health vocab
                      caitlindavies8
                      GCSE AQA Biology - Unit 2
                      James Jolliffe
                      Summary of AS Psychology Unit 1 Memory
                      Asterisked
                      Theories of Religion
                      Heloise Tudor
                      AQA GCSE Biology B1- Quiz
                      Ethan Beadling
                      AQA GCSE Chemistry Unit 2
                      Gabi Germain
                      EXAM 1 - ENABLING FEATURES
                      kristinephil558
                      Performance y Planificación de Vuelo
                      Adriana Forero