Life span of RBC isa)50 daysb)75daysc)120 daysd)100 daysCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

120 days. .

Answer

120 days

Answer

RBCs are known to contain haemoglobin that supply oxygen to all parts of the body...
Hence, they occupy a majority in our blood...
That is why, it lasts for 100-120 days..

Answer

120 day

Answer

Because after this they are removed from the circulation. As with inability to carry anymore haemoglobin in them.

Answer

Human red blood cells are formed mainly in the bone marrow and are believed to have an average life span of approximately 120 days.

Answer

Life Span of RBC

The correct answer is option 'C', which states that the lifespan of red blood cells (RBCs) is approximately 120 days. Let's explore the details behind this answer.

RBC Function and Production

- Red blood cells, also known as erythrocytes, play a crucial role in the circulatory system by carrying oxygen from the lungs to the various tissues and organs of the body.
- The production of RBCs occurs in the bone marrow through a process called erythropoiesis.

Overview of RBC Lifespan

- The average lifespan of RBCs in the human body is around 120 days.
- However, it's important to note that this lifespan can vary slightly between individuals and can be influenced by various factors such as age, health conditions, and environmental factors.

Factors Affecting RBC Lifespan

1. Age:
- As RBCs age, their cell membranes become more fragile and less flexible, making them more susceptible to damage.
- Older RBCs also tend to have a decreased capacity to transport oxygen efficiently.
- Therefore, older RBCs are removed from circulation and replaced with younger, healthier cells.

2. Health Conditions:
- Certain health conditions, such as anemia or underlying diseases, can affect the lifespan of RBCs.
- For example, in some forms of anemia, the production of RBCs may be decreased, leading to a shorter lifespan for the remaining cells.

3. Environmental Factors:
- Exposure to certain toxins, chemicals, or radiation can also affect the lifespan of RBCs.
- These factors can cause damage to the cell membrane or interfere with the ability of RBCs to carry oxygen effectively.

Removal of Old RBCs

- RBCs have a finite lifespan, and once they reach the end of their lifespan, they are removed from circulation by the spleen and liver.
- The process of removing old RBCs is known as phagocytosis, where specialized cells called macrophages engulf and break down the aging RBCs.
- The breakdown products of RBCs, such as iron and bilirubin, are recycled or excreted by the body.

Conclusion

In conclusion, the lifespan of red blood cells (RBCs) is approximately 120 days. However, it's important to note that this lifespan can vary slightly between individuals and can be influenced by various factors such as age, health conditions, and environmental factors. The removal of old RBCs from circulation is essential for maintaining the overall health and functionality of the circulatory system.

Answer

Human red blood cells are formed mainly in the bone marrow and are believed to have an average life span of approximately 120 days. Human red blood cells are formed mainly in the bone marrow and are believed to have an average life span of approximately 120 days.

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