Quiz
Physio II
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Fragen in diesem Quiz (8)
1Intercostal muscles are the most important muscles of respiration
- ARichtig
- BFalsch
2Muller's maneuver measures maximum inspiratory pressure (MIP) developed against a block of the trachea at RV
- ARichtig
- BFalsch
3Valsalva maneuver measures Expiratory muscle strength - measures maximum expiratory pressure (MEP) at RV
- ARichtig
- BFalsch
4Cough - which statement is wrong
- ASensory reflex loop - RARs (rapidly adapting receptors) detect irritants and stimulate trigeminal nerve -> brain stem -> motor neurons ->respiratory muscle contractions
- BSequence - deep inhalation -> forced expiration on closed glottis -> open glottis forced espiration
- C3 most common cause of chronic cough (> 8 weeks) post nasal drip from rhinosinusitis, asthma and GERD
- DReaches a speed of 28,000 cm/sec, eject about 40,000 microdroplets which may contain >200,000 virus particles
5Airflow and respiratory pressures are measured in cm of H2O because the pressure changes in the lung are so small that it is hard to see a 1 or 2 mmHg change
- ARichtig
- BFalsch
6Regarding pressures all of the following are true except
- AP(alveolar) = P(barometric) at end inspiration and end expiration
- BP(alveolar) = P(Barometric) here is no air flow and glottis is closed
- CWhen P(alveolar) > P(barometric) the direction of airflow is - out of lungs (expiration)
- DPL = PA-Ppl
7During Respiration the following is the sequence except
- AInspiratory muscles contract -> thoracic cavity expands
- BPleural pressure becomes more negative (-5 to -8 cm of H2O)
- CTranspulmonary pressure decreases
- Dlungs inflate and alveolar pressure becomes subatmospheric --> air flows into the lungs until alveolar pressure equals atmospheric pressure
8Boyles law
- AP1V1 = P2V2
- BDuring inspiration Alveolar Pressure drops and volume increases
- CDuring inspiration Pleural pressure increases (becomes more negative) and volume decreases
- D1,2,3 are correct
- E1,2 are correct
- F2,3 are correct
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- ivenkat
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- English
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