Gaseous Exchange and Transportation of Gases

About _____ $\%$ of ${\mathrm{O}}_2$ is transported by haemoglobin.

During one circuit of blood from the lungs to the tissues and back through the circulatory system, the percentage of haemoglobin giving up its oxygen to the tissues is

Explain the exchange of gases in alveoli.

During breathing, oxygen diffuses out of the alveoli and into the capillaries.

Explain the process of gaseous exchange between capillaries and cells.

Gaseous exchange takes place within the heart.

How does gaseous exchange happen between alveoli and capillaries?

How does carbon dioxide is transported in the blood?

What is the structural and functional unit of the lung?

With the help of a neat flow chart explain what happens to air after it enters the nostrils.

Fact: Oxygen will support life.
(a)Describe the formation of oxyhaemoglobin.
(b)What do you understand by oxygen debt?

Explain what happens to your muscles when you do exercise for a longer time.

What is the meaning of high altitude sickness? How does it affect a human?

Explain the difference between the lungs of the people who stay at sea levels and the people who stay at high altitudes?

Explain how oxyhaemoglobin is formed.

Explain the mechanism of transportation of gases in the respiratory system.

The sum of TIDAL VOLUME and the INSPIRATORY RESERVE VOLUME is _____(inspiratory capacity/expiratory capacity).

Fact: The total lung capacity (TLC) is a measurement of the total amount of air that the lung can hold. It is the sum of the residual volume, expiratory reserve volume, tidal volume, and inspiratory reserve volume.
What do you understand by residual volume?

Fact: Total lung capacity is the volume of gas present in the lung with maximal inflation.
Explain the term tidal volume.

What is functional residual capacity (FRC)?