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respiratory system - Coggle Diagram
respiratory system
parts of the respiratory system
the airway
nose
mouth
pharynx (throat)
larynx (voice box)
trachea (windpipe)
bronchi
bronchioles
epiglotis
the lungs
passes oxygen to the body
passes oxygen out of the body
intercostal muscles
muscles of respiration
diaphram
intercostal muscles
work together to push air in and out of the lungs
key terms
diffusion
gas moving from high to low concentration
gaseous exchange
movement of oxygen and carbon dioxide between lungs and blood at aveoli
features of aveoli
moist
thin walls (1 cell thick)
provides large surface area for gaseous exchange to occur
short diffusion distance
surrounded by capillaries
lung volumes
tidal volume
normal (at rest) amount of air we inhale and exhale 500ml
residual volume
amount that remains in lungs after maximal exhalation
stops collasped lung
vital capacity
maximum amount of air you can fully take in
what is it for
get oxygen into the body
get carbon dioxide out of the body
allows muscles to work efficiently
mechanics of breathing
inspiration
breathing in
intercostal muscles contract
ribs raise to create space
diaphragm flattens
exhalation
breathing out
internal intercostal muscles contract
ribs lower
diaphragm pushes up
gaseous exchange
takes place in the aveoli
oxygen passed into blood to circulate around the body
carbon dioxide taken out of the blood t the alveoli to be breathed out
