Flashcards
controlling breating
Flashcards do conjunto (12)
- 1VO2The volume of oxygen a person
consumes per minute - 2VO2 maxThe volume of oxygen a person consumes per minute at their maximum rate of aerobic exercise. Depends on the efficiency of lungs and cardiovascular system when taking up and delivering oxygen and the efficiency that muscles use oxygen
- 3Tidal volumeAverage volume of one breath
- 4Minute ventilationthe amount of air taken into the lungs in one minute. Tidal volume x breathing
rate = minute ventilation - 5Vital capacityThe maximum volume of air a person can inhale and exhale
- 6SpirometerUsed to study breathing and respiration. Breathing in and out of air in a tank make the levels rise and fall, making a pen on a kymograph produce a trace
- 7Residual volumeThe amount of air in lungs after complete exhalation (more in emphysema or ashtma attack)
- 8Oxygen debtThe increase in oxygen consumption after strenuous exercise (which lead to anaerobic respiration) to convert lactate into CO2 and H2O rather than pyruvate
- 9Ventilation centreIn the medulla oblongata that controls breathing. When CO2 levels are high and O2 levels are low it sends impulses every 2-3 seconds to the diaphragm and external intercostal muscles to make them contract (inhalation). Inhibits muscle contraction when stretch receptors send impulses back (exhalation)
- 10Stretch receptors (in external intercostal muscles)Send impulses back to ventilation centre when intercostal muscles have contracted (inhalation)
- 11RespirometerUsed to measure rate of oxygen uptake in small organisms
- 12Altitude sicknessControl of breathing goes wrong after rise in altitude. Oxygen levels drop so breathing quickens. CO2 levels drop so ventilation centre may stop breathing. Should descend.
Informações
- Descrição
- AS - Level Biology (Topic 7) FlashCards sobre controlling breating, criado por Alice Storr em 17-04-2017.
- Criado por
- Alice Storr
- Visualizações
- 29
- Tags
- Avaliação