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A-Level Biology OCR A

Air Forcefully Quickly Breathe Volume State Pieces Equipment

Equipment for measuring lung function includes the peak flow meter (measures exhalation speed), the vitalograph (graphs exhalation volume and speed), and the spirometer (measures air volumes by recording the movement of a float or lid).

Los equipos para medir la función pulmonar incluyen el medidor de flujo máximo (mide la velocidad de exhalación), el vitalógrafo (grafica el volumen y la velocidad de exhalación) y el espirómetro (mide volúmenes de aire al registrar el movimiento de un flotador o tapa).

Front State 3 pieces of equipment used to measure functioning of the lungs. Outline how each works.
Back Measuring function of lungs:
  • Peak flow meter - measures how fast air comes out of lungs when exhaling forcefully and inhaling fully
  • Vitalograph - patient exhales forcefully as quickly as possible thru mouthpiece and instrument produces graph of amount of air they breathe out and how quickly breathed out
  • Spirometer - breathe in/out of trapped volume of air this moves the float/lid, changing the volume as it goes up/down
    • Kymograph attached to float/lid records the movements

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