Question

What feature helps to maximize the volume of gases exchanged during internal expiration?

Answer 1

Answer:

• Internal respiration:  

It can be defined as,"The exchange of gaseous(CO₂ and O₂) or diffusion of materials which occurs inside the body, between the interstitial spaces(along with capillaries) and the veins inside the blood circulatory system."

Explanation:

Difference in O₂ and Co₂ concentration inside the blood medium and the cells:

Diffusion occurs when there is a change of concentration or level of O₂ and Co₂.As there is more O₂ inside the blood,as compared to the O₂ present inside the interstitial spaces and the capillaries,so,it diffuses from the blood medium into the capillaries leading to there oxygenation. As the CO₂ level inside the cells and the interstitial spaces is more as compared to the low concentration of CO₂ in the blood,so, CO₂ diffuses from the capillaries to the vein leading it to the lungs.

Answer 2

The level of oxygen in the blood...
the level of carbon dioxide in the blood...
the level of oxygen in the alveoli...
the shape of the alveoli...
the shape of the lungs....