as outlined in my last post (if not read , first, you'd be embarrassed, and then read it here ) the number of commentators and visitors of this blog is quite modest, if compared with the other blog I have in my capacity as teacher of Biological Sciences: in about a year, has received over 50,000 visits, while you're reading this now, barely three years exceeds 45,000. Therefore, and jumping to conclusions, I figured that people want to read scientific issues, a proposal which was seconded by Marple. So here we go.
guess at this point, dear reader, know that both you and I have blood, as with many other animals, is more like known since the sixteenth century, that blood circulates, ie moves. We, who are mammals (yes, no make that face, or do born from an egg?) Have closed circulation, ie the blood always travels within blood vessels, although the name suggests otherwise, are conduits, pipes or tubes, which communicate with each other, in an orderly manner.
Now, more than a pipe is filled with liquid, the liquid will not move unless you force something, that something is the heart, which is nothing but a hollow muscular organ that works as a pump, not at all like farting graphical representation is done and that has as much to do with feelings as the nail of the toe.
far, so good, but ... Why Caracho blood moves within the main vascular?
Well, among the many functions that have the blood, is to serve as a means of transport to the body for it are the nutrients, oxygen, antibodies, drugs and all the etceteras merge you can imagine, and she comes around waste, but in a tidy and neat: it never occurs to him to waste a cell just throw in the opposite getting a perfect asshole and gross arm mess transit.
But the issue before us today is none other than the analysis of the composition of the blood-red, viscous liquid that is not grenadine or anything like it, and to the more convex ever noticed that there is not even always good red color, but sometimes the blood is rather morochona. What happens is that when it is loaded with oxygen is bright red, and when it becomes full of carbon dioxide is a dark red, more suitable for making sausages.
Blood has two basic components: the liquid part, which is the obvious, ie, plasma, and the cell formed, which has no obvious because if you want to know will have to look through a microscope. The plasma is like a broth, water ingredients, most of which are proteins, and most of the blood, otherwise, rather than liquid would be something as strawberry jam, and not want to imagine the force that would cause the heart to pump, and how you would have to swollen veins and arteries.
the other hand, the youngest, is composed of cells, of which there are three outfits: red blood cells, also called erythrocytes or red blood cells, white blood cells, alias leukocytes and platelets, also known as thrombocytes. The percentage of total cells in the blood is called hematocrit, and a well-born person walks about 40 or 45%. (Ah! Was that what was in the analysis!)
red blood cells are characterized by several things, particularly as many that are in a cubic millimeter of blood (and a tiny cube of 1 mm side) 5:000.000 a comfortable fit. But just as there are many, are bitsy, and biconcave disc-shaped, something like a bakery but little eye candy on both sides. Of course they are not red, like any suspicious be suspected from the beginning, are yellow, but being sooooo, give the effect of "red blood "of Tarantino's films.
Now ... Why do we have so many red blood cells? Well, neither more nor less than to carry oxygen. When a red blood cell passes through the lungs, "traps" the oxygen that is entering, with a special hook, hemoglobin. Oxygen "hooked" is taken to the cells of the body, those who use it for energy. This means that if low red blood cell count (anemia, you say) there are few trucks that carry oxygen, and cells lack raw material to produce energy, so that will generate a feeling of tiredness. This gives a good excuse: "Sir, I can not work at the pace you ask me, not because it is idiot, but because I have anemia. "
White blood cells are significantly less than the red (about 7,000 per mm3), but in its favor are that they are huge and varied: there are lymphocytes, monocytes and granulocytes. Non-whites (Quack!) But colorless, and are responsible for an attack by other organisms such as viruses, bacteria and protozoa (but not of-law or heavy ex-boyfriend). Clear that in defending white blood cells sometimes win and sometimes lose, but not to worry that something has to die.
Platelets are not true cells, but fragments, with some 200,000 per mm3 of blood will do fine. You would think that if they are small pieces of cells, are useless ... Big mistake! Are platelets that are going to act when the main seal is broken, and involved in clotting.
Clearly, the cells die, because no one hundred years living cell or body that resists, but are continually forming new cells, not Factory National Blood Cell but ... what not Where you imagine? Inside the bones! The development of blood cells called nothing more and nothing less than hemocitopoyesis , hemocitopoyesis or for friends, which as everyone knows means "formation of blood cells" .
To decorate this post, I leave these advances in the film "Bodas de Sangre" by Carlos Saura, Antonio Gades with the divine, and ole!
To decorate this post, I leave these advances in the film "Bodas de Sangre" by Carlos Saura, Antonio Gades with the divine, and ole!
And with that culminated this post will surely be the strangest ever seen on this blog, but you can not say that I am not ; what I promise.
* Compilation by Maestro José María Firpo, published in 1976 by Editorial Arca
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