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become activated, attracting proteins called coagulation factors or clotting factors to the wound. The clotting factors cause a soluble blood protein called fibrinogen to be converted into insoluble fibrin threads. These threads form a mesh over the wound, trapping platelets and blood and forming a blood clot. Chemicals in the blood stop the blood clot from becoming so big that it blocks the vessel and also break it down once the wound is sealed. Although the.
nctions of BloodBlood is Nike Air Jordan Retro 6 Oreo
Severe bleeding decreases the amount of fluid for the heart to pump and lowers blood pressure. This can have very serious effects on the brain because its cells need a constant and adequate supply of oxygen from red blood cells. Blood Circulation around the BodyBlood leaves the heart through arteries. The arteries branch into smaller arterioles which in turn branch into tiny capillaries. The capillaries travel through the tissues. Substances such as Nike Jordan 4 White Cement oxygen and nutrients leave the capillaries and enter the tissue cells. Substances such as carbon dioxide and other wastes move from the tissue cells into the capillaries. The wastes are removed from the body when the blood reaches the right location. Capillaries join together to form venules, which in turn join to form veins. The veins return the blood to the heart. Capillaries have thin walls and are so narrow that red blood cells must pass through them in a single file. Our body can quickly repair a wound in a capillary and replace the lost blood.
it to the tissue cells. The cells need this oxygen to produce energy. There are also several types of white blood cells In blood. These are part of the body's immune system and protect us from infection. The platelets are cell fragments that become activated when we're wounded, helping blood to clot and bleeding to stop. Activated platelets have a spiky appearance. The blood cells are suspended in a fluid called plasma. The plasma transports nutrients, dissolved gases, salts, hormones, important proteins and heat throughout the body. It also transports waste substances away from tissues to be excreted. The pumping of the heart is the ultimate source of blood pressure.
Blood loss from a bigger blood vessel is more serious, however. The most serious wounds of all are those in arteries, since the blood here is under high pressure created by the heartbeat and may spurt out of the wound. Wounds in veins are serious too, although the blood flows out of an injured vein steadily instead of leaving it in spurts. How Does Blood Clot?Blood clotting, or hemostasis, is an essential body process that repairs wounds and stops bleeding. The overall steps in the blood clotting process are as follows. Next, a platelet plug forms over the wound to temporarily stop blood loss. Platelets are continually circulating in our blood. The platelets Nike Air Jordan Retro 12
a vital fluid in our bodies. It transports essential substance to and from our tissue cells. The red blood cells are the most numerous type of cell in the blood. They transport inhaled oxygen around the body and deliver Nike Jordan Running Shoes
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