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Multiple Choice
Where do red blood cells pick up oxygen during the process of gas exchange?
A
In the nephrons of the kidneys
B
In the alveoli of the lungs
C
In the capillaries of the liver
D
In the ventricles of the heart
Verified step by step guidance
1
Understand the process of gas exchange: Gas exchange primarily occurs in the lungs, where oxygen is transferred from the air into the bloodstream, and carbon dioxide is expelled from the blood into the air.
Identify the structure involved in gas exchange: The alveoli are tiny air sacs in the lungs where the exchange of gases takes place. They are surrounded by capillaries, allowing oxygen to enter the blood and carbon dioxide to be removed.
Recognize the role of red blood cells: Red blood cells contain hemoglobin, a protein that binds to oxygen. As blood passes through the capillaries surrounding the alveoli, oxygen binds to hemoglobin in the red blood cells.
Differentiate between other organs: The nephrons in the kidneys are involved in filtering blood and producing urine, not gas exchange. The liver processes nutrients and detoxifies substances, while the heart pumps blood throughout the body.
Conclude the location of oxygen pickup: Red blood cells pick up oxygen in the alveoli of the lungs during the process of gas exchange, as this is where the oxygen concentration is highest and readily available for binding.