Question

Give the below question answers...

Answer 1

1) nostrils

2) pharynx

3) lungs

4) diaphragm

5) nasal cavity

6) trachea

7) bronchioles

8) alveoli

2) diffusion is caused due to the difference in partial pressure of the two gases. Oxygen has more pressure in lungs than carbon dioxide so CO2 diffuses out and O2 diffuses in RBCs.

3) CO2 will be more concentrated in blood. In lungs the concentration of oxygen is already high.

4) yes it depends upon the partial pressure of each gas at its respective location. In alveoli the concentration of O2 is more while in blood concentration of CO2 is more. So the O2 will diffuse in the blood and CO2 will diffuse out from blood.

I hope this helps you.

Incase you still have doubt feel free to ask.