gas exchange. The diffusion of gases from an area of higher concentration to an area of lower concentration, especially the exchange of oxygen and carbon dioxide between an organism and its environment.
What are the two main gases in gas exchange?
The function of the respiratory system is to move two gases: oxygen and carbon dioxide. Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them.
What causes the process of gas exchange?
Gas exchange occurs as a result of respiration, when carbon dioxide is excreted and oxygen taken up, and photosynthesis, when oxygen is excreted and carbon dioxide is taken up. The rate of gas exchange is affected by: the speed with which molecules diffuse through membranes.
What do you mean by gas exchange?
gas exchange. The diffusion of gases from an area of higher concentration to an area of lower concentration, especially the exchange of oxygen and carbon dioxide between an organism and its environment. In plants, gas exchange takes place during photosynthesis.
What is the process of gas exchange called?
This process of gas exchange is called respiration. As cellular activity in the lung increases, the cells increase the production of carbon dioxide, which is absorbed by the blood.
Where is gas exchange gas exchange?
Gas Exchange Gas exchange occurs at two sites in the body: in the lungs, where oxygen is picked up and carbon dioxide is released at the respiratory membrane, and at the tissues, where oxygen is released and carbon dioxide is picked up.
What is the exchange of gases?
The exchange of gases occurs as a result of diffusion down a concentration gradient. Gas molecules move from a region in which they are at high concentration to one in which they are at low concentration.
What is gas exchange in the respiratory system?
Gas exchange is the process by which oxygen and carbon dioxide move between the bloodstream and the lungs. This is the primary function of the respiratory system and is essential for ensuring a constant supply of oxygen to tissues. This article will discuss the principles of gas exchange, factors affecting the rate of exchange and relevant
What two gases are used in respiration?
Two gases in particular, carbon dioxide (CO2) and oxygen (O2), are used and dispensed of regularly during respiration. After gas exchange has occurred, the transportation of the gas through the blood is the next step. There are a few distinct processes that can occur to promote gas transportation.