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NCE UPON A RED CELL

 JUAN MANUEL ASENSIO GIL - 3º

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Oh, I am an afraid

red cell! I just comefrom the bone

narrow; and I haveno nucleus. I want tostay near you. What

is this?

 You are not alone, you aremillions, moreover, we

Leuocytes are your friendsand travel with you and

 hrombocytes too.

We are in the ri"ht atrium , in the

heart, , and we are startin" the mostincredible travel. #on$t worry!

We hel% to %rotect the

body from infection and hrombocytes %revents

haemorrha"es

&arl be careful,there are viruses

tryin" to attac!

#on$tworry

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'hhhhhhhh! We are %assin" the tricus%idvalve to the ri"ht ventricle and from

there, the %ulmonary valve to "o to thelun"s throu"h the %ulmonary artery . We

are %lain of &O( and we must becleaned there. We have to tae the O(

molecules too

 You, )uicly, watch

what you have todo!!!

I t is the famous interchan"e of "ases?*antastic!

 hans, %re%arenew %hotos, %lease!

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Oh, I am very "lad . It hasbeen comfortable to

release the &O(

 Yes, I a"ree, andthe O( moleculesare very

refreshin"!!

Loo the new%hoto!!

Why are we returnin"to the heart?

We travel to the leftatrium via the %ulmonaryveins, because we needto %ass throu"h the heart

twice to com%lete thedouble circuit.

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+y teacher told methat we have to %assto the left ventriclethrou"h the mitral

valve, isn$t it?

ere you have a %ri-e toyour attention in class

 Yes, it is, and then throu"h the

aortic valve to "o to the aorta tosu%%ly the cells with O( and retire

&O(  a"ain in a com%lete andclosed circulation

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'nd are thereseveral routes?

 Yes, there are, his is becausethe aorta s%lits into arteries ,arterioles and ca%illaries, andafter the su%%ly of nutrients

and o/y"en in every tissue andor"an

the blood travel a"ain to

the heart via venules, veinsand venae cavae with

waste %roducts. Loo at the%icture a"ain!

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Loo, we are now "oin"throu"h the mesenteric

artery to the stomach andintestine

 You always have thebest collection of

%hotos.

 0o, we will %ass tothe liver throu"hthe he%atic %ortal

vein.

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Other red cells will travelthrou"h the he%atic artery to

the liver, or throu"h the renalartery to the idneys,

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other red cells "o tothe "enitals

 You now alot to be a

Leuocyte!!!

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and otherred cells to the

le"s.

I have tobuy the

same boohe reads.

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We are travellin"throu"h the inferior

vena cava to theri"ht atrium to start

a"ain!

 Yes, youare ri"ht.

 You are allvery u"lywhen youbecomeblue..

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ere, we are a"ain , ey you,0mallred, where have you travelled?

I have travelled to thehead throu"h the carotidartery and have turned

to the ri"ht atriumthrou"h su%erior venacava. I have taen this

%hoto

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 Yes, it is veryinterestin". I have

taen my own%hoto

 his is the ri"htatrium a"ain . ave

you enjoyed thetravel?

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THE END