Physiology of Diving 1

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The Physiology of diving, PADI IDC practice exam questions

When breathing against a poorly adjusted regulator your breathing may become rapid and shallow as a result of?

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Hypercapnia

Hypocapnia

Hyperoxia

Hypoxia

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Which of the following activities can increase the chance of DCS if engaged in either before OR after a dive?

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Strenuous excercise

Smoking

Drinking alcohol

All of the above

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A forceful valsalva (equalisation) may rupture?

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Inner ear

Oval Window

Middle Ear

Round Window

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Excessive voluntary hyperventilation reduces _______ in the bloodstream?

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Oxygen

Carbon Dioxide

Carbon Monoxide

Nitrogen

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When a diver surfaces from a dive the level of nitrogen in their system is greater than the surrounding pressure, this is called?

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Saturation

Equilibrium

Supersaturation

None of the above

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Which of the following is the most serious lung over expansion injury?

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AGE (Arterial Gas Embolism)

Pneumothorax

Mediastinal Emphysema

Subcutaneous Emphysema

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Carotid Sinus reflex is caused by pressure being exerted on the?

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Chest

Wrists

Neck

None of the above

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Carbon Monoxide poisoning is caused by carbon monoxide bonding more readily with _____ in the blood than oxygen does?

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Plasma

White Blood Cells

Hemoglobin

None of the above

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Which of the following statements is MOST correct with regard to Dead Air Space?

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It is a punk rock band from the 1970s

It is the increased volume of air you re-breathe when using scuba equipment

It is the portion of tidal volume that plays no part in gas exchange

It is a pocket of air trapped underwater that has become stale and should not be breathed

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Signs and symptoms of carbon monoxide poisoning include:

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Cherry red lips

Joint Pain

Drowsiness

Both A and C (answers 1 and 3)

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