Red blood cells

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Garter
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Red blood cells

Post by Question » Wed Mar 15, 2006 7:12 pm

Simple question, i know in humans red blood cells have a particular shape; round with a concave surface on both sides. Is the basic shape of these cells the same in all mammals?

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MrMistery
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Post by MrMistery » Wed Mar 15, 2006 7:35 pm

I think so. I know for a fact mamals are the only animals that have RBC with no nucleus.

Oh, unless you have the pesky sickle cell anemia.. :lol: :lol: :lol:
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cardiorrhexis
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Re: Red blood cells

Post by cardiorrhexis » Mon Mar 20, 2006 4:54 am

Question wrote: Is the basic shape of these cells the same in all mammals?



NO NO NO NO NO!!!!!!!


Some are spherical (dogs, cats, humans...most really), but some are elyptical, some are tear drop shape, some are crescent shaped and some are oval shape...

True, mammals have NO nucleus where birds and reptiles do.

llama RBC's
Image

caprine RBC's
Image

equine RBC's
Image


and just for giggles...
avian RBC's
Image
Image

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MrMistery
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Post by MrMistery » Mon Mar 20, 2006 7:21 pm

Ok. I stand corrected. Anyway red blood cell shape was never one of my strong spots :lol:
A little correction(and i am sure about this):
In humans they are not spherical, they have the shape of a biconcave disc. This gives them more surface area with less volume
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

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cardiorrhexis
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Post by cardiorrhexis » Mon Mar 20, 2006 9:21 pm

Yes, I think they're biconcave in many mammals....but spherical at an arial view so to speak (microscope view)....sorry about that...

have you seen the electron microscope pictures of RBC's?? I LOVE it!

Image

The big purple thing is a platelet! Isn't that the coolest thing? :lol:
Image

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Dr.Stein
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Post by Dr.Stein » Tue Mar 21, 2006 12:50 pm

IMO lymphocyte is the one that actually gives a great view by EM, a tound with a lot of "short tentacles" here and there, the markers 8)
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cardiorrhexis
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Post by cardiorrhexis » Tue Mar 21, 2006 8:45 pm

I think it's a platelet...Usually lymphocytes are much larger than RBC's and take a more uniform shape than platelets do...



Image

Here's an electron microscope image of a lymphocyte alone
Image


Here's an electron microscope image of platelet alone...
Image
Image

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cardiorrhexis
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Post by cardiorrhexis » Tue Mar 21, 2006 8:47 pm

OH! Here you go!!!

Here's a couple RBC's with Lymphocytes....

Image
Image

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cardiorrhexis
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Post by cardiorrhexis » Tue Mar 21, 2006 8:50 pm

Sorry for the threadjack by the way!
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