Biology · Gaseous Exchange

A low alveolar oxygen tension increases pulmonary vascular resistance (hypoxic pulmonary vasoconstriction) .it restricts breathing normally.

(Right Answer) The addition of CO₂ in these concentrations to the inspired oxygen increased in respiratory frequency, maximal at the first breath, and sustained for the 1 min period of exposure. The increase in respiratory frequency was due to a shortening of expiratory duration. Carbon dioxide is one of the most powerful stimulants of breathing. As the partial pressure of carbon dioxide in arterial blood rises, ventilation increases nearly linearly. Our chemoreceptors can response to carbon dioxide more effectively than to oxygen.

A high carbon dioxide level in the lungs can confuse. Some people who have respiratory failure may become very sleepy or lose consciousness. They also may have arrhythmia (irregular heartbeat).

Hypoxia is low levels of oxygen in your body tissues. It causes symptoms like confusion, restlessness, difficulty breathing, rapid heart rate, and bluish skin.

A low alveolar oxygen tension increases pulmonary vascular resistance (hypoxic pulmonary vasoconstriction). It restricts breathing normally.

(Right Answer) The addition of CO₂ in these concentrations to the inspired oxygen increased in respiratory frequency, maximal at the first breath, and sustained for the 1 min period of exposure. The increase in respiratory frequency was due to a shortening of expiratory duration. Carbon dioxide is one of the most powerful stimulants of breathing. As the partial pressure of carbon dioxide in arterial blood rises, ventilation increases nearly linearly. Our chemoreceptors can response to carbon dioxide more effectively than to oxygen.

A high carbon dioxide level in lungs can cause confusion. Some people who have respiratory failure may become very sleepy or lose consciousness. They also may have arrhythmia (irregular heartbeat).

Hypoxia is low levels of oxygen in your body tissues. It causes symptoms like confusion, restlessness, difficulty breathing, rapid heart rate, and bluish skin.