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Are blood platelets cells?

Discussion of all aspects of cellular structure, physiology and communication.

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Postby Poison » Tue Jun 14, 2005 8:07 pm

None of my books say that they are cells, but ,you know, I can't have all the biology books. :)
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Postby MrMistery » Tue Jun 14, 2005 9:03 pm

It is all in the barrier between cell and ex-cell :D I would never recommend that blood palletes be called cells but i would not be surprised to see them in a book as cells. Kyle, what does Grey say?
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Postby caite » Fri Jun 17, 2005 1:06 am

platelets are cells that produce a scab. :?
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Postby Poison » Fri Jun 17, 2005 5:04 pm

It is obviously seen that you have no idea abut our point of discussion, caite...
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Postby th1_rhs13 » Mon Jun 20, 2005 5:43 am

"A Disk-shaped cell fragment in the blood important in blood clotting; Also known as thrombocyte" From my Biology Text published by Postlethwait and Hopson.

Although within my lab practical and notes it was noted to be an actual cell. Im eagerly awaiting the results of said exam as well as my lecture one, I almost died when i went blank when the specimens within the Anamalia phyla were brought up. All I could recall were the anthropda.
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Postby b_d_41501 » Mon Jun 20, 2005 2:46 pm

I just picked up a sweet Leather-bound edition of Gray's Anatomy at Barnes & Noble this weekend. lol :D Gray's refers to platelets as this, "The Blood platelets are discoid or irregularly shaped, colourless, refractile bodies, much smaller than the red cells. Considerable discussion has arisen as to their significance. In spite of the fact that they have been observed in the blood vessels during life, there is, at present, a tendency to regard them as products of disintegration of the white cells, or as precipitates, possibly of nucleo-proteid, and not as living elements of the blood. " Directly from Gray's Anatomy. :D :mrgreen:
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Postby MrMistery » Mon Jun 20, 2005 7:29 pm

Really? I have never heard of such an opinion
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Postby MrMistery » Mon Jun 20, 2005 7:41 pm

Just remember I had an anatomy book from a med school student.
"Tromocytes or blood platelets. They are acellular components of the blood"
"The process of forming new blood plateletss, that assuers the stability of their number takes place in hematogen bone marrow. The cell where the blood platelets have their origin is called a megacariocyte, a large cell with a lobed nucleus."
Not quite the same thing as Gray, wouldn't you say....
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