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Respiratory system (Aerobic exercise (Raises heart and breathing rate (Can…
Respiratory system
Aerobic exercise
Raises heart and breathing rate
Can be sustained over time
Long duration
e.g. jogging
Low intensity
With oxygen
Waste product - carbon dioxide and water
Anaerobic exercise
Pushes performer to maximum
Lead to fatigue and being out of breath
Without oxygen
High intensity
Short duration
e.g. sprinting
Waste product - lactic acid
Pathway of air
Bronchioles -> alveoli
Right bronchi -> right lung
Left bronchi -> left lung
Pharynx -> larynx -> trachea
Nose or mouth
Key terms
Tidal volume
- volume of air inspired or expired per breath
Minute ventilation
- volume of air inspired or expired per minute
Breathing rate
- number of inspirations or expirations per minute
Minute ventilation = tidal volume x breathing rate
Alveoli
Gaseous exchange between the lungs and bloodstream
one-cell thick
covered in capillaries
carbon dioxide is exchanged for oxygen to fill the red blood cells
Respiratory muscles
Diaphragm
Inspiration - contracts
Expiration - relaxes and flattens
Increase volume of chest cavity
Decrease pressure inside lungs
Intercostals
Inspiration - rib cage lifted
Expiration - rib cage lowers
