Respiratory Physiology and Oxygen Administration Quiz

Alveoli are part of the respiratory zone where gas exchange occurs, not the conducting zone.

The respiratory system is not involved in digestion; its functions include gas exchange and breathing.

Internal intercostals primarily aid in expiration by depressing the rib cage during quiet breathing.

PCO2 primarily affects blood pH and the Bohr effect, but not hemoglobin's affinity for oxygen.

A decreased pH, indicative of acidity, decreases hemoglobin's affinity for oxygen, facilitating oxygen release to tissues.

The diaphragm contracts during inspiration, leading to an increase in thoracic volume and lung expansion.

FVC measures the maximum amount of air forcibly exhaled after a maximal inhalation, indicating lung function.

Hypoxemia is a condition characterized by abnormally low levels of oxygen in the blood.

Emphysema is a chronic respiratory disease characterized by irreversible damage to the air sacs in the lungs.

PAO2 is primarily determined by the rate of alveolar ventilation, which affects oxygen exchange in the lungs.

Vital capacity represents the maximum amount of air a person can exhale after a maximal inhalation and is calculated by summing these volumes.

A gastric tube is used for feeding, not for administering oxygen.

Emphysema is characterized by the destruction of alveolar walls, leading to enlarged air spaces in the lungs.

FiO2 indicates the percentage of oxygen in the gas mixture delivered to the patient during oxygen therapy.

A non-rebreather mask delivers the highest FiO2 as it prevents the patient from rebreathing exhaled air.

The primary goal of oxygen therapy is to increase oxygen levels in the blood to alleviate hypoxemia and improve tissue oxygenation.

Bronchiectasis is a chronic respiratory condition characterized by abnormal and irreversible dilation of the bronchi and bronchioles.