Body Systems - Respiration

GAS EXCHANGE
1. happens in ALVEOLI - in lungs
2. oxygen INTO alveoli
3. carbon dioxide GIVEN OUT
JOURNEY TO THE LUNGS
1. oxygen enters body though mouth & nose
  1. TRACHEA (windpipe)
    1. BRONCHUS
      Annotations:
      - lol
      1. BRONCHIOLE
        ALVEOLUS
        and diffuses into BLOOD
  2. travels through (structures that get smaller and smaller)........
INHALED & EXHALED AIR
1. INHALING
  1. muscle between ribs & diaphragm CONTRACTS
    1. INCREASES volume inside chest
      1. pressure DECREASES
        air drawn INTO lungs
2. EXHALING
  1. muscle between ribs & diaphragm RELAX
    1. DECREASES volume inside chest
      1. pressure INCREASES
        air forced OUT of lungs
3. INFO
  1. exhaled WARMER than inhaled
  2. exhaled MORE CARBON DIOXIDE than inhaled
  3. exhaled MORE WATER than inhaled
  4. exhaled LESS oxygen than inhaled

Resource summary

	Created by Sarah S about 5 years ago