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People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude [1995, 2006]
- a)atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive
- b)there is more UV radiation which enhances RBC production
- c)people eat more nutritive food, therefore more RBCs are formed
- d)people get pollution - free air to breathe and more oxygen is available
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
People living at sea level have around 5 million RBC per cubic millime...
At the altitude of 5400 meters the low atmospheric pressure of O2 will be too low so the solubility of oxygen in the blood will be very less hence the oxygen carried by each RBC will be too less. But to fulfill the oxygen requirement of the body blood has to carry more oxygen to the body tissue and this is done by the increased no. of RBCs.
Most Upvoted Answer
People living at sea level have around 5 million RBC per cubic millime...
Explanation:
At high altitudes, the atmospheric pressure decreases, resulting in lower oxygen levels. This presents a challenge for individuals living in such conditions as they need to ensure an adequate supply of oxygen to their tissues. The body has a remarkable ability to adapt to changes in oxygen availability, and one of the ways it does so is by increasing the number of red blood cells (RBCs).
Reason 1: Atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive
The primary role of RBCs is to transport oxygen from the lungs to the body's tissues and remove carbon dioxide, a waste product of cellular respiration, from the tissues back to the lungs. Hemoglobin, a protein found in RBCs, binds to oxygen in the lungs and releases it in the tissues. At higher altitudes, where the atmospheric oxygen concentration is lower, the body compensates for the reduced oxygen availability by increasing the production of RBCs.
Reason 2: There is more UV radiation which enhances RBC production
UV radiation exposure at high altitudes can stimulate the production of erythropoietin, a hormone responsible for regulating RBC production. However, it is important to note that UV radiation exposure alone is not the primary reason for the increased RBC production at high altitudes. The main driver is the reduced oxygen availability, as mentioned in reason 1.
Reason 3: People eat more nutritive food, therefore more RBCs are formed
While a nutritious diet is essential for overall health, including the production of RBCs, it is not the primary reason for the increased RBC count at high altitudes. The body's response to reduced oxygen availability is the key factor driving the increased production of RBCs.
Reason 4: People get pollution-free air to breathe and more oxygen is available
While it is true that pollution-free air and increased oxygen availability can have positive effects on overall health, they are not the primary reasons for the increased RBC count at high altitudes. The primary reason, as explained earlier, is the reduced oxygen availability at higher altitudes, which triggers the body to produce more RBCs to compensate for the lower oxygen levels.
In conclusion, the correct answer is option 'A' - Atmospheric O2 level is less at high altitudes, and hence more RBCs are needed to absorb the required amount of oxygen to survive. This adaptive response allows individuals living at high altitudes to maintain adequate oxygen supply to their tissues despite the lower atmospheric oxygen concentration.
At high altitudes, the atmospheric pressure decreases, resulting in lower oxygen levels. This presents a challenge for individuals living in such conditions as they need to ensure an adequate supply of oxygen to their tissues. The body has a remarkable ability to adapt to changes in oxygen availability, and one of the ways it does so is by increasing the number of red blood cells (RBCs).
Reason 1: Atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive
The primary role of RBCs is to transport oxygen from the lungs to the body's tissues and remove carbon dioxide, a waste product of cellular respiration, from the tissues back to the lungs. Hemoglobin, a protein found in RBCs, binds to oxygen in the lungs and releases it in the tissues. At higher altitudes, where the atmospheric oxygen concentration is lower, the body compensates for the reduced oxygen availability by increasing the production of RBCs.
Reason 2: There is more UV radiation which enhances RBC production
UV radiation exposure at high altitudes can stimulate the production of erythropoietin, a hormone responsible for regulating RBC production. However, it is important to note that UV radiation exposure alone is not the primary reason for the increased RBC production at high altitudes. The main driver is the reduced oxygen availability, as mentioned in reason 1.
Reason 3: People eat more nutritive food, therefore more RBCs are formed
While a nutritious diet is essential for overall health, including the production of RBCs, it is not the primary reason for the increased RBC count at high altitudes. The body's response to reduced oxygen availability is the key factor driving the increased production of RBCs.
Reason 4: People get pollution-free air to breathe and more oxygen is available
While it is true that pollution-free air and increased oxygen availability can have positive effects on overall health, they are not the primary reasons for the increased RBC count at high altitudes. The primary reason, as explained earlier, is the reduced oxygen availability at higher altitudes, which triggers the body to produce more RBCs to compensate for the lower oxygen levels.
In conclusion, the correct answer is option 'A' - Atmospheric O2 level is less at high altitudes, and hence more RBCs are needed to absorb the required amount of oxygen to survive. This adaptive response allows individuals living at high altitudes to maintain adequate oxygen supply to their tissues despite the lower atmospheric oxygen concentration.
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People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude [1995, 2006]a)atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to surviveb)there is more UV radiation which enhances RBC productionc)people eat more nutritive food, therefore more RBCs are formedd)people get pollution - free air to breathe and more oxygen is availableCorrect answer is option 'A'. Can you explain this answer?
Question Description
People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude [1995, 2006]a)atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to surviveb)there is more UV radiation which enhances RBC productionc)people eat more nutritive food, therefore more RBCs are formedd)people get pollution - free air to breathe and more oxygen is availableCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude [1995, 2006]a)atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to surviveb)there is more UV radiation which enhances RBC productionc)people eat more nutritive food, therefore more RBCs are formedd)people get pollution - free air to breathe and more oxygen is availableCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude [1995, 2006]a)atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to surviveb)there is more UV radiation which enhances RBC productionc)people eat more nutritive food, therefore more RBCs are formedd)people get pollution - free air to breathe and more oxygen is availableCorrect answer is option 'A'. Can you explain this answer?.
People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude [1995, 2006]a)atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to surviveb)there is more UV radiation which enhances RBC productionc)people eat more nutritive food, therefore more RBCs are formedd)people get pollution - free air to breathe and more oxygen is availableCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude [1995, 2006]a)atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to surviveb)there is more UV radiation which enhances RBC productionc)people eat more nutritive food, therefore more RBCs are formedd)people get pollution - free air to breathe and more oxygen is availableCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude [1995, 2006]a)atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to surviveb)there is more UV radiation which enhances RBC productionc)people eat more nutritive food, therefore more RBCs are formedd)people get pollution - free air to breathe and more oxygen is availableCorrect answer is option 'A'. Can you explain this answer?.
Solutions for People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude [1995, 2006]a)atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to surviveb)there is more UV radiation which enhances RBC productionc)people eat more nutritive food, therefore more RBCs are formedd)people get pollution - free air to breathe and more oxygen is availableCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
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ample number of questions to practice People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude [1995, 2006]a)atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to surviveb)there is more UV radiation which enhances RBC productionc)people eat more nutritive food, therefore more RBCs are formedd)people get pollution - free air to breathe and more oxygen is availableCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice NEET tests.
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