0
Gas exchange occurrs in all organisms, but judging by the category this question placed in, I am making the assumption that this question is asking about gas exchange in humans.
Humans use lungs for gas exchange. The lungs are two internal "sac-like" organs. The lungs are able to expand and contract becuase of the alveoli. Alveoli are small cavities/air sacs in the lungs.
The lungs are connected to the outside air by way of a system of tubular passageways; the trachea, bronchi and bronchioles. Each lung is divided into a number of lobes, each recieving its own bronchus. Each bronchus divides many times into bronchioles, which then end in many alveole ducts and alveoli. These provide a very large surface area for the exchange of respiratory gases by diffusion betweent he alveoli and the blood in the capillaries.
Gas exchange occurs in two stages of ventillation, called inhilation and exhilation. Inhilation is when the intercostal muscles contract, which causes the ribcage to expand and move up, and the diaphragm then contracts and moves down. This action causes the thoraic voume to increase, which allows the lungs to expand and this decreases the pressure inside them. Air is then pulled in from the atmosphere is response to this pressure gradient. The cardiovascular system then participates by transporting the respiratory gases to and from the cells of the body.
In the second stage of ventilation, exhilation, the intercostal muscles and diaphragm relax. and gravity pulls the ribcage down. The lungs then recoil, which decrease the volume inside and therefore increases the pressure. The air then flows out of the lungs to equalize with the air pressure outside of the lungs, and with it we release carbon dioxide.
So to summarise: We breathe in O2 when the lungs expand, and we release CO2 when the lungs contract.
What else can I help you with?
Does Parafilm allow for gas exchange?
Yes, Parafilm allows for limited gas exchange due to its semi-permeable nature.
Gas exchange is also known as?
Gas exchange can also be referred to as respiration. This process involves the uptake of oxygen and release of carbon dioxide in living organisms. It occurs in specialized organs such as the lungs in mammals and gills in fish.
In which structure does gas exchange occur?
Gas exchange occurs in the alveoli of the lungs. These tiny air sacs are surrounded by capillaries where oxygen from the air can enter the bloodstream and carbon dioxide can be removed from the blood.
What provide the greatest surface area for gas exchange?
Alveoli in the lungs provide the greatest surface area for gas exchange in the body. They are tiny air sacs that are surrounded by capillaries where oxygen and carbon dioxide are exchanged during respiration. The numerous alveoli increase the total surface area available for this gas exchange process.
What organelle is responsible for gas exchange?
The organelle responsible for gas exchange in plants is the chloroplast. Carbon dioxide enters the chloroplast, where it is converted into oxygen during photosynthesis. In animals, the lungs are responsible for gas exchange, where oxygen is taken in and carbon dioxide is released.
Is gas exchange a function of the digestive system?
Gas exchange is a function of respiration not digestion.
What is the elastic unit of the respiratory system where gas exchange occurs?
Alveoli is where gas exchange occurs.
What do gas exchange systems have in common?
The exchange surfaces are moist.
What is the name for exchange of gas in the lungs?
gaseous exchange
Where does gas exchange occur?
gas exchange occurs between the thin walls of the alveoli and the thin walls of the capillaries
What are the actual sites of gas exchange within the lungs are the?
The actual sites of gas exchange within the lungs are the alvioli.
How does the gas exchange take place in flatworms?
worms carry out gas exchange by absorbing air through their skin
What is the site for gas exchange?
the organ that is involved in gas exchange is the lung. the specific lung structure that is the site for gas exchange is the alveolus which is part of the alveoli, which is found in the lung.
What happens in the alveoli in the process of gas exchange.?
Alveoli- these are the small sac-like structures where gas exchange occurs with the blood. Its creates an ideal site for gas exchange between the air in the lungs and the blood in the capillaries.
What are the factors responsible for gas exchange?
well, depends on the gas.
How does gas exchange occurs within?
gaseous exchange takes place when the volume of the chest cavity is increased or decreased.
Can manometers be used to record any metabolic gas exchange?
Manometers are typically used to measure pressure, so they are not commonly used to directly measure metabolic gas exchange. For recording metabolic gas exchange, methods such as gas analyzers or respiratory gas exchange systems are more commonly used because they can measure specific gas concentrations in exhaled breath.
