How often do cells die?.

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Presentation transcript:

How often do cells die?

Red blood cells Have a lifespan of ~120 days Transport nutrients around your body

Skin cells You lose ~1 million dead skin cells per day Most of those cells are found in the dusty areas of your home!

White blood cells Help fight off infections Last in the bloodstream for ~3-6 hours https://www.youtube.com/watch?v=hacbn_xcZdU

Stomach The cells that line your stomach have a life span of ~2 days

skeleton Skeletal cells (osteocytes) have the one of longest cellular life spans. In general, an adult skeleton is replaced every 10 years.

In your journal… If cells are constantly dying, why don’t we run out? Write your answer in your journal.