Cardio-respiratory System Flashcards
Cardio-respiratory system
name to describe the respiratory system and cardiovascular system working together
Gaseous exchange
process where oxygen from the air in the alveoli moves into the blood in the capillaries, while carbon dioxide moves from the blood in the capillaries into the air in the alveoli
Haemoglobin
Protein found in red blood cells that transports oxygen (as oxyhaemoglobin) and carbon dioxide around the body
Oxyhaemoglobin
Chemical formed when haemoglobin bonds to oxygen
Alveoli
Small air sacs in the lungs where gaseous exchange takes place
Capillaries
network of microscopic blood vessels, only one cell thick
Diffusion pathway
distance travelled during diffusion (short in gaseous exchange)
Inhalation/Inspiration
the process of breathing in
Exhalation/expiration
process of breathing out
Expiratory reserve volume
amount of air that can be forced out after tidal volume
decreases during exercise
Inspiratory reserve volume
amount of air that can be forced in after tidal volume
decreases during exercise
Residual volume
amount of air that remains in the lungs after maximal expiration
no change in residual volume during exercise
Tidal volume
normal amount of air inhaled/exhaled or breath
increases with exercise
Vital capacity
largest volume of air that can forcibly expired after the deepest possible inspiration
Deoxygenated blood
blood containing a low concentration of oxygen
