Question

question 68 (0.5 points)
which statement is most false?
ventilation can occur in the alveoli.
an example of internal respiration is when oxygen is transferred from alveoli to
the blood in pulmonary capillaries.
respiration can occur between a cell and a capillary/ interstitium.
ventilation can occur in the primary bronchus.

Explanation:

1. Analyze each option:

• Ventilation involves movement of air; alveoli are part of gas exchange but ventilation (air movement) occurs in airways like bronchi and trachea, but alveoli are for gas exchange (respiration), so "Ventilation can occur in the alveoli" is false, but let's check others.
• Internal respiration is gas exchange between blood and tissues, while gas exchange between alveoli and pulmonary capillaries is external respiration. So "An example of internal respiration is when oxygen is transferred from alveoli to the blood in pulmonary capillaries" is incorrect (misclassifies external as internal).
• Respiration (gas exchange) between cell and capillary/interstitium is internal respiration, which is true.
• Ventilation (air movement) can occur in primary bronchus as it's an airway.

1. The second option misdefines internal respiration (alveoli - pulmonary capillaries is external respiration), making it the most false.

Answer:

An example of internal respiration is when oxygen is transferred from alveoli to the blood in pulmonary capillaries.