Explain how blood clots.?

Answer 1

SEE INFO ON THIS:
A thrombus, or blood clot, is the final product of the blood coagulation step in hemostasis. It is achieved via the aggregation of platelets that form a platelet plug, and the activation of the humoral coagulation system (i.e. clotting factors). A thrombus is physiologic in cases of injury, but pathologic in case of thrombosis.

Specifically, a thrombus is a blood clot in an intact blood vessel. A thrombus in a large blood vessel will decrease blood flow through that vessel. In a small blood vessel, blood flow may be completely cut-off resulting in the death of tissue supplied by that vessel. If a thrombus dislodges and becomes free-floating, it is an embolus.

Some of the conditions in which blood clots develop include atrial fibrillation (a form of cardiac arrhythmia), heart valve replacement, a recent heart attack, extended periods of inactivity (see deep venous thrombosis), and genetic or disease-related deficiencies in the blood's clotting abilities.

Preventing blood clots reduces the risk of stroke, heart attack and pulmonary embolism. Heparin and warfarin are often used to inhibit the formation and growth of existing blood clots, thereby allowing the body to shrink and dissolve the blood clots through normal methods (see anticoagulant).

A thrombus differs from a haematoma by:

Having high haematocrit
Being non-laminar
Being soft and friable
Having an absence of circulation
Virchow's Triad describes the conditions necessary for thrombus formation:

Changes in vessel wall morphology (e.g. trauma, atheroma)
Changes in blood flow through the vessel (e.g. valvulitis, aneurysm)
Changes in blood composition (e.g. leukaemia, hypercoagulability disorders)
Disseminated intravascular coagulation (DIC) involves widespread microthrombi formation throughout the majority of the blood vessels. This is due to excessive consumption of coagulation factors and fibrinolysis using all of the body's available platelets and clotting factors. The end result is ischaemic necrosis of the affected tissue/organs and spontaneous bleeding due to the lack of clotting factors. Causes are septicaemia, acute leukaemia, shock, snake bites or severe trauma. Treatment involves the use of fresh, frozen plasma to restore the level of clotting factors in the blood.

Answer 2

Well I can tell by the way that your question was worded that you very likely lack any understanding of evolution, or the english language for that matter. Hopefully english is your second language. If not go and READ some BOOKS (on grammar and the proper usage of). Also, nice additional details...It was quite obnoxious to tell you the truth, and really gave me a way to measure exactly what kind of ignoramus I had here. Thank you. As another poster stated already, its hardly a miracle considering it happens all day long every day. Not exactly your definition of a miracle, maybe more of a mundane event. Regardless, its almost seemingly obvious you won't accept the validity of any sort of scientific explanation, but I'll try anyway. Your first question isn't valid since nobody beside you and a some other Religious Zealots/Evolution Deniers would or could believe blood clotting is a miracle. Your second question: "How will mutations work here?" I will attempt to answer in a round about manner. Well for example we have sickle cell anemia, its a genetic mutation that is quite prevalent in people of sub Saharan Africa. Anemia causes issues with...You guessed it: CLOTTING!! It can cause excessive clotting that can lead to strokes and a whole slew of other medical issues. Not exactly a good mutation but evolution is just change, doesn't always have to be for the better. Now the fact that so many people, in one geographic area are affected by the same genetic disorder, completely lends a hand to the evolution argument. Its a great example of a shared genetic trait that seems to have a intense concentration dependent on the geographical location...Much like skin color and many other physical factors are related to where a persons genetics come from. I know these concepts, even though simple and quite easy to understand, are lost on you but hopefully this will penetrate that especially thick field of obnoxious, moronic ignorance you shroud your brain in. I ranted all day long...I'm gonna go read a book. So immature, really, I gave you an answer, even though i know you didn't want one really..You just wanted to be a evolution denying, religious troll, who has no shame and feel no qualms about denying truth and evidence. Sorry real explanations take thought, are full of big science words and are generally longer than the go to Christian answer for anything of "God made it that way". Next time, try not to be such a condescending A hole after asking your question, if you expect any sort of respect that is anyway. Not that you deserve any anyway. Go on and deny, take comfort in the lies, with a blank stare in your eyes, ignorance your alibi.

Answer 3

There is substance in the blood that leads to it clotting called platelets. This holds it together like a net and it becomes sticky.

Answer 4

Explain how blood clots.....What?!

Answer 5

If this is for school, look it up...It is very interesting..