The Respiratory System: Aerobic and Anaerobic Respiration
- Created by: katie__hyde
- Created on: 08-10-13 19:58
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- The Respiratory System
- How we breathe
- Inhale
- Diaphragm contracts descends and flattens out the rib cage floor
- Intercostal muscles contract and pull the ribs upwards
- Lungs increase in size decreasing the pressure
- Higher external atmospheric pressure pushes air into our lungs
- Exhale
- The diaphragm relaxes and is pushed back into domed position
- The intercostal muscles relax and the ribs down under own weight
- Space in lungs is now smaller
- Pressure inside lungs increases
- Inhale
- The respiratory system and excercise
- When we exercise, more oxygen is needed by working muscles and more carbon dioxide must be removed from muscles
- Results of this
- Rate of breathing increases
- Increased depth of breathing
- Up to vital capacity
- Increased blood flow through the lungs
- Increase oxygen taken up and used by body
- Results of this
- When we exercise, more oxygen is needed by working muscles and more carbon dioxide must be removed from muscles
- How oxygen gets to working muscles
- 1. Air we breathe in passes into tiny sacs in the lungs called alveoli
- Haemoglobin in blood from capillaries takes up oxygen from alveoli
- Transport it through pulmonary vein to LEFT SIDE OF HEART
- Oxygenated Side
- Transport it through pulmonary vein to LEFT SIDE OF HEART
- Haemoglobin in blood from capillaries takes up oxygen from alveoli
- 2. Oxygenated blood id then pumped through aorta to body tissues
- Oxygen is carried within red blood cells
- 3. When blood arrives in capliiaries at tissues, it gives up oxygen and nutrients e.g. glucose
- It picks up waster products of carbon dioxide and water
- 4. Within body cells, oxygen is used to release the energy from glucose
- This process is called cell respiration
- Right side of heart
- Deoxygenated
- Right side of heart
- This process is called cell respiration
- 5. Carbon dioxide must be removed from body
- Carried to heart then lungs
- Here it is released into alveoli and breathed out of body
- Carried to heart then lungs
- 7. Not all the carbon dioxide is removed
- Its presence in bloodstream is checked by the brain
- The amount of carbon dioxide in blood is then used to control rate of breathing
- Its presence in bloodstream is checked by the brain
- 8. Air we breathe in
- 79% Nirtogen
- 21% Oxygen
- 0.04% Carbon Dioxide
- Air we breathe out
- 79% Nitrogen
- 16% Oxygen
- 4% Carbon Dioxide
- 1. Air we breathe in passes into tiny sacs in the lungs called alveoli
- Lung Capacity
- Tidal Volume
- Amount of air breathed in and out during normal breathing
- When resting, about 500ml of air moves in and out of the lungs per breath
- Amount of air breathed in and out during normal breathing
- Residual volume
- Total lung capacity =vital capacity + residual volume
- Vital Capacity
- Largest amount of air that can be forced out of lungs after taking in as much air as we can in 1 breath
- Air left behind is residual volume
- Largest amount of air that can be forced out of lungs after taking in as much air as we can in 1 breath
- Tidal Volume
- Aerobic respiration
- Heart and lungs work to supply the muscles with oxygen
- Moderate to hard continuous activities
- Glucose + Oxygen = Energy + Carbon Dioxide + Water
- Heart and lungs work to supply the muscles with oxygen
- Anaerobic respiration
- Muscles not supplied with oxygen
- Glucose (No oxygen) = Energy + Lactic Acid
- Demand for oxygen is so great that the CV system doesn't have enough time to supply the demand
- When and athlete stops after a sprint, the continue to breathe more heavily to take in extra oxygen
- Oxygen debt
- This is in order to break down lactic acid which makes muscles feel tired.
- When and athlete stops after a sprint, the continue to breathe more heavily to take in extra oxygen
- Muscles not supplied with oxygen
- How we breathe
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