Respiratory System 3 Flashcards
— is the process by which oxygen and carbon dioxide are exchange between the atmosphere and our body cells
Respiration
What are the four distinct phases of respiration?
- pulmonary ventilation
- External respiration
- Transportation of gases
- internal respiration
Everything that involves the movement of air in and out of the lungs
Pulmonary ventilation
The pressure within our lungs is called?
While the pressure within the cavity is?
- Intrapulmonary pressure (Ppul = 760mmHg)
- intrapleural (Pip = 756mmHg)
— and — are equal because they have the same concentration.
Intrapulmonary and atmospheric pressure
Boyle’s law
At a fixed temperature, the increase in volume will create an inversely proportional reaction to the pressure. Therefore, an increase in volume will lead to a decrease in pressure and a decrease in volume will lead to an increase in pressure.
What is the positive pressure that helps to inflate the lungs?
Trans pulmonary pressure (Ppul - Pip)
At rest:
- Atmospheric pressure = ?
- Intrapleural pressure = ?
- Intrapulmonary pressure =?
0 mmHg
-4 mmHg
0 mmHg
During inspiration :
- Atmospheric pressure = ?
- Intrapleural pressure = ?
- Intrapulmonary pressure =?
0 mmHg
-6 mmHg
-1 mmHg
When there is a lower pressure within the lungs than outside the lungs, the air rushes in to the lungs.
(therefore, as the volume increases, the pressure decreases)
During expiration?
- Atmospheric pressure = ?
- Intrapleural pressure = ?
- Intrapulmonary pressure =?
0 mmHg
-5 mmHg
+1 mmHg
Because there is now a lower pressure outside of the lungs and the higher pressure inside of the lungs. The air rushes outside of the lungs.
(therefore as the volume decreases, the pressure increases)
The exchange of gases between the lungs and the bloodstream
External respiration
The area in which of the gas exchange occurs
Blood gas barrier
( the barrier between the blood and gas)
Components of blood
- plasma
- formed elements
— is mostly nonliving fluid matrix. While —are suspended living blood cell
- plasma (55%)
- formed elements (45%)
— Is part of the immune system and creates immune responses within the bloodstream while -– are responsible for clotting of blood.
— is particularly for the transportation of gases
- white blood cell
- platelets
- red blood cell