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It is a peculiarity of mammalian red blood cells (RBCs) that the nucleus is extruded (pushed out of the cell) as the cell develops. Other organelles, including mitochondria, are also lost.

Without a nucleus, the cell lacks genetic control over its activities. This probably explains why RBCs are broken down after a relatively short time.

In humans, the average life of an RBC is about 120 days. We make about three million new ones every second.

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15y ago
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15y ago

No they don't. They last about 3-4 months for a healthy person. The cells that line your stomach/GI system have much shorter life span.

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14y ago

Accually,a red blood cell for a a week. Plus more blood cells are made than died most of the time

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13y ago

The red blood cells are like every other living thing. They have a life span. When they're used for a certain amount of time they get worn out. i guess that's why.

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13y ago

Yes erythrocytes have the life span of 120 days.

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13y ago

Red blood cells get replaced because eventually they wear out and are removed from circulation. If they were not replaced, the person would become anemic and eventually die.

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9y ago

All cells age. Red blood cells are particularly prone to aging because they have no nucleus when mature.

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Q: Why do red blood cells get replaced?
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Related questions

How red blood cells get replaced?

The old red blood cells get replaced by the newly formed red blood cells.


What Blood Cells are replaced on a regular basis?

the red blood cells are


How long for all of the red blood cells in your body to be replaced.?

red blood cells are replaced ever 120 days, so therefore are replaced 3 times a year


What part of the blood is replaced every 3-4 months?

Red blood cells


What percentage of adult red blood cells are replaced daily?

1%


What would happen if you lost a few red blood cells?

One loses 'a few red blood cells' every minute. They wear out, or bleed out, etc., and are replaced.


Red blood cells need to be replaced every how many days?

40 to 50


What does the replacement of red blood cell depend mostly on?

The replacement of red blood cells primarily depends on the rate of production in the bone marrow and the lifespan of the cells. Red blood cells normally have a lifespan of about 120 days, after which they are removed from circulation and replaced with new ones. The body closely regulates the production of red blood cells to maintain a stable level of oxygen-carrying capacity in the blood.


What are the the cells that carry oxygen?

Red blood cells contain hemoglobin. These cells are also known as erythrocytes.


What blood cells contain haemoglobin?

Red blood cells because that is what carries oxygen throughout the body


What cell transports oxygen?

red blood cells


What is the major difference between red blood cells and white blood cells?

Red blood cells contain hemoglobin, but white blood cells do not