Breathing

Question 1

What is the function of the respiratory system?

Answer 1

The function of the respiratory system includes the intake of oxygen and the removal of CO2. Cells need oxygen to break down nutrients to release energy and produce adenosine triphosphate (ATP). CO2 results from this process and must be excreted.

Question 2

What is event 1 of respiration?

Answer 2

Movement of air in and out of the lungs is called pulmonary ventilation or breathing, involving inward movement or inspiration/inhalation and outward movement or expiration/exhalation, in which gases are changed and refreshed continuously.

Question 3

What is event 2 of respiration?

Answer 3

External Respiration - diffusion of gases between the alveoli and the blood of the pulmonary capillaries.
Occurs at the bottom of the lungs in the alveoli.

Question 4

What is event 3 of respiration?

Answer 4

Transport - transport of oxygen and carbon dioxide between the lungs and tissues.

Question 5

What is event 4 of respiration?

Answer 5

Internal Respiration - diffusion of gases between the blood of the systemic capillaries and cells.

Question 6

What is Dalton’s Law?

Answer 6

In a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases.