gas exchange takes place in the lungs, and at the cellular level.
In the lungs, carbon dioxide and other "waste" gasses are released from the blood to be exhaled, and oxygen is absorbed into the blood.
At the cellular level, oxygen is released from the blood into a cell, and carbon dioxide and other "waste" gasses are passed into the blood.
The adaptive value of having the organ of gas exchange inside the body is increased effectiveness. It allows for more rapid movement of air across the lungs.
Gas exchange occurs in the capillaries which are the smallest blood vessels in the body. Each artery that comes from the heart is surrounded by capillaries so that they can take it to the various parts of the body. This is why whenever we get a paper cut and we bleed this blood is from the capillaries which branch off in to smaller veins and arteries and then eventually into capillaries.
The actual air exchange takes place in the alveoli of the lungs
Gas exchange is important as it is the transfer of oxygen from the surroundings to individual cells in the body, required by the cells for respiration. This process produces energy, essential for the organisms survival. A waste product of respiration is carbon dioxide, which if not removed from the body by gas exchange, will be harmful.
Usually in the body, it is only in the lungs or the respiratory system and nothing else.
It is simpie diffusion through body surface
Respiration
The capillaries are responsible for gas and nutrient exchange with each of the body's cells.
Gas exchange between the body and the environment occurs in the lungs.
Gas exchange happens in the bed of CAPILLARIES in the lungs.
lunges
worms carry out gas exchange by absorbing air through their skin
the alveoli in the lungs and the capillaries in the body
respiratory
gas exchange to take place/to allow cells to lose CO2 and gain O2 so they will be oxygenated and ready to be pumped around your body.
More exercise means the body needs more oxygen, hence the need for a quickening of gas exchange, Otherwise, dizziness and shortage of breath could result.
Diffusion