Question

Low alveolar PO2 can be caused by one of two mechanisms. One of them is that the inspired air has low oxygen content. What is the other reason? Low alveolar PO2 can be caused by one of two mechanisms. One of them is that the inspired air has low oxygen content. What is the other reason?a) Hypoventilation b) Low hematocrit c) High altitude d) Low hemoglobin concentration.

Answer 1

Hypoventilation is the second mechanism causing low alveolar PO2, which results from inadequate air entering the alveoli, and leads to decreased partial pressure of oxygen and impairments in oxygen diffusion into the blood.

Step-by-step explanation:

The other mechanism causing low alveolar PO2, besides inspired air with low oxygen content, is hypoventilation. Hypoventilation is a state in which there is an insufficient amount of air entering the alveoli in the lungs, leading to low oxygen levels (alveolar hypoxia) and elevated carbon dioxide levels (hypercapnia).

Without adequate ventilation, the partial pressure of oxygen in the alveoli decreases, making it more difficult for oxygen to diffuse into the blood.

The body compensates for hypoventilation by redirecting blood flow to better-ventilated alveoli. However, if hypoventilation persists, it may result in systemic symptoms due to inadequate oxygenation of the blood.

Answer 2

a. Hypoventilation

Step-by-step explanation:

Hypoventilation

(Hypo means below)

It's poor gas exchange caused by low ventilation that results in accumulation of carbon dioxide (hypercapnia) and respiratory acidosis.

Another term for Hypoventilation is respiratory depression