The white blood cellplatelet fraction we analysed for the correction was comprised of both white blood cells and platelets at a ratio of 1. Functions of blood supplies essential nutrients in cells such as glucose, fatty acid and amino acids. Red blood cells erythrocytes white blood cells leukocytes platelets thrombocytes together, these three kinds of blood cells add up to a total 45% of the blood tissue by volume, with the remaining 55% of the volume composed of plasma, the liquid component of blood. Red blood cells rbcs, also known as erythrocytes, have two main functions. Blood consists of plasma fluid rbc, wbc and platelets. Platelets help the blood clotting process or coagulation by gathering at the site of an injury, sticking to the lining of the injured blood vessel, and forming a platform on which blood coagulation can occur. Functions of water in the body transport nutrients to cells and wastes from cells. If a blood vessel wall becomes damaged, platelets will rush to the site of injury and form a plug or clot to stop the bleeding. Blood plasma is actually the dominant component of blood and contains the water. White blood cells and platelets use three selectin proteins to interact with vascular endothelial cells and each other. The main functions of blood are to supply oxygen and nutrients to tissues and cells, removal.
Also contains electrolytes these are red blood cells rbc, responsible for transporting these are white blood cells wbc, protect the body against in components of blood. Not only does the spleen filter blood of old cells, but it also stores functional red blood cells, platelets, and white blood cells. The function of platelets is to repair small blood vessels and prevent dangerous amounts of blood from leaking out. The extracellular matrix, called plasma, makes blood unique among connective tissues because it is fluid. Jan 27, 2015 functions of blood, formed elements of blood. Blood platelets in mammals are produced from multinucleated giant cells in the bone marrow called megakaryocytes. Friends, in this video i have discussed about basics about blood and function of blood.
Like all connective tissues, it is made up of cellular elements and an extracellular matrix. Nov 18, 2019 blood counts measure the number of of red blood cells, white blood cells, and platelets in the blood. Platelets, also known as thrombocytes, are blood cells responsible for blood clotting. Blood plasma transport nutrients glucose, amino acids, vitamins, fatty acids and. Blood1functions, formed elements rbcs, wbcs, platelets. Platelets circulate in the bloodstream for about 9 to 10 days. The platelets are known to be the clotting factors of the blood that helps in clot formation during the time of the wound and excess blood flowing. The red blood cells erythrocytes constitute about 45 percent of the volume of the blood, and the remaining cells white blood cells, or leukocytes, and platelets, or thrombocytes less than 1 percent. This helps you give your presentation on red blood cells in a conference, a school lecture, a business proposal, in a webinar and business and professional representations. Functions of water in the body act as a solvent for electrolytes and non electrolytes. The average adult has a blood volume of roughly 5 litres 11 us pt or 1. Discuss the composition and functions of mammalian blood kcse biology essays font size decrease font size increase font size. Eosinophilplatelet interactions promote atherosclerosis. Platelets are natural components of the blood that help control bleeding.
Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in. Thrombocytopenia can occur if the bone marrow does not make enough platelets or. Structure and function of blood biology for majors ii. Facilitate cellular metabolism and proper cellular chemical functioning. An erythrocyte is a discshaped cell with a thick rim and a thin sunken centre. When the platelets gather at a cut blood vessel, they give off several. Plasma is the main component of blood and consists mostly of water, with. If platelet count is low a condition called thrombocytopenia, the risk of uncontrolled or prolonged bleeding increases.
To pick up oxygen from the lungs and deliver it to tissues elsewhere. Blood is actually a term used to describe the liquid that moves through the vessels and includes plasma the liquid portion, which contains water, proteins, salts, lipids, and glucose and the cells red and white cells and cell fragments called platelets. Jan 30, 2016 blood cells red bllod cells white blood cells thrombocytes 6 7. A low platelet count may result from a condition called thrombocytopenia. The liquid part of blood which carries red blood cells. Transport smaller molecules such as hormones and ions.
Red blood cells erythrocytes rbcs are the biconcave cells. Blood is a specialized fluid in your body that has four main components, each with a different function. Approximately fiftyfive percent of your blood is plasma, fortyfive. Pdf platelets from formation to function researchgate. What are mostly water and function as the medium through which blood cells and platelets are transported through the body. The function of blood is what it does in the body carries o2, co2, food, hormones water etc. Exposure of vwf on platelets was assessed by fluorescenceactivated cell.
In lymph nodes or at sites of inflammation, selectins snare circulating white blood cells, allowing them to roll over the surface of endothelial cells and eventually to exit the blood fig. Platelets are the smallest of the three major types of blood cells. In this lesson, we will explore the three functions of blood by delving into red blood cells, white blood cells and platelets the three individual components that make up blood as a whole. These solids are the organic and inorganic substances. A blood clot is formed when sticky platelets become covered with fibrin a plasma protein that holds the blood clot together. Maintain osmotic pressure by drawing water back into capillaries to he lp maintain body fluid levels.
When you are healing from an injury, your blood begins to clot because of the action of platelets, which are cells circulating in blood that clump together to prevent excessive bleeding by forming a small and temporary plug. How to increase a low platelet count 19 home remedies. Platelet pselectin initiates crosspresentation and. It also contains thousands of different proteins and other substances electrolytes for example that are needed for our bodies to function normally. A normal platelet count is between 150,000 to 450,000 platelets per microliter of blood. The cmp gives rise to the mkep, which can differentiate into megakaryocyte progenitors mkps or erythroid progenitors eps. Red blood cells rbcs and platelets plts are very abundant, highly specialized. Red blood cellserythrocytes, white blood cellsleucocytes and plateletsthrombocytes. Its what suspends red blood cells, platelets, and other cells within our bloodstream. Pdf cryopreservation of red blood cells and platelets. Free download red blood cells powerpoint presentation slides. The earliest mkp is the burstformingunit megakaryocyte bfumk.
Blood cells can be regarded as a classical field of application of lowtemperature biology. Blood the circulating fluid including plasma and different cells such as red blood cells, white blood cells and platelets in the vascular system of humans and other vertebrates. The water of the plasma is freely exchangeable with that of body cells and. Transports mostly oxygen to rest of body, but also carbon dioxide. Blood, fluid that transports oxygen and nutrients to cells and carries away carbon. Can be a secondary result of hemorrhagic anemia, but it also results from inadequate diet or impaired absorption match the following disorder with the appropriate description. Plasma the plasma is the light yellow liquid portion of the blood and is about 90% water. A single megakaryocyte can produce anywhere from to 3000 platelets. The blood cells which circulate all around the body are as follows. Platelets are only about 20% of the diameter of red blood cells. The normal platelet count is 150,000350,000 per microliter of blood, but since platelets are so small, they make up just a tiny fraction of the blood volume. Its composition and function the blood in our circulatory system is a watery based fluid and consists of two basic components. Platelets, also called thrombocytes, are blood cells whose function along with the coagulation factors is to stop bleeding.
Mar 14, 2014 powerpoint is the worlds most popular presentation software which can let you create professional red blood cells powerpoint presentation easily and in no time. Nov 14, 2018 platelets blood cells continuously produced from megakaryocytes mainly in the bone marrow are implicated not only in haemostasis and arterial thrombosis, but also in other physiological. We have seen blood consist of cells known as formed elements of blood. For this reason, the partially deoxygenated blood from a vein is darker than oxygenated blood from an artery. During the approximately four months theyre alive, the red blood cells play a major role as an oxygentransportation system. The removal of coagulation factors from plasma leaves a fluid similar to interstitial fluid, known as serum. To pick up carbon dioxide from other tissues and unload it in the lungs. H2o2 can be further reduced into water by catalase cat. White blood cells are part of the immune system and function in immune response. Discuss the composition and functions of mammalian blood. Platelets are small, anucleate cells which travel as resting discoid fragments in the circulation. Red blood cells are responsible for carrying oxygen and carbon dioxide. What is blood function of blood rbc wbc plasma and. In vertebrates, it is composed of blood cells suspended in blood plasma.
Rbc and plt functions are regulated by cellspecific redox systems. The ratio of platelets to red blood cells in a healthy adult is 1. When a person is cut, platelets rush to the area and cling to the blood vessels that have been damaged, sealing them. Although we identified pselectin as the primary initiator of plateletdependent dc maturation and crosspresentation, our studies do not exclude a role for other plateletborne molecules in linking platelets to adaptive immune functions of blood monocytes.
Plasma is mostly made of the water and salts absorbed through a. Unlike red and white blood cells, platelets are not actually cells but rather small fragments of cells. Human body lesson plans and brain worksheets for high school biology or anatomy and physiology classes. In humans, it includes plasma the liquid portion, blood cells which come in both red and white varieties, and cell fragments called platelets. Red blood cells are dynamic reservoirs of cytokines. Their average circulating life span is 8 to 9 days, and their formation is an elegant and finely. Rbc means red blood cells which contains haemoglobin a red pigment which gives red colour to blood and binds with oxygen and transports it to all parts of the body cells. The smear is used to examine platelets for size, shape, qualitative number, and clumping. Blood is a body fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells in vertebrates, it is composed of blood cells suspended in blood plasma. The red blood cells found in the blood carries oxygen to various parts of the body.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. Transport hormones, enzymes, blood platelets, and red and white blood cells. The components of blood and their importance youtube. Blood facts, functions and composition hijama cups.
Red blood cells rbcs white blood cells wbcs platelets blood consists of 55% plasma and 45% formed elements blood plasma 91. Wbc means white blood cells which fight against germs that may enter our body. Many hematological cancers are based on the inappropriate production of white blood cells. Blood accounts for 7% of the human body weight, with an average density around 1060 kgm 3, very close to pure water s density of kgm 3. Plasma, which constitutes 55% of blood fluid, is mostly water 92% by volume, and. On a stained blood smear, platelets appear as dark purple spots, about 20% the diameter of red blood cells. Plasma, which constitutes 55% of blood fluid, is mostly water 92% by volume, and contains proteins, glucose, mineral ions. Platelets blood cells continuously produced from megakaryocytes mainly in the bone marrow are implicated not only in haemostasis and arterial. When they become old or damaged, they are removed from circulation by the spleen.
The cellular elementsreferred to as the formed elementsinclude red blood cells rbcs, white blood cells wbcs, and cell fragments called platelets. Platelets help prevent blood and fluid loss by clumping together to begin the coagulation process. Pathophysiology functions of water in the body 2017. Powerpoint is the worlds most popular presentation software which can let you create professional red blood cells powerpoint presentation easily and in no time. The redox physiology of red blood cells and platelets.
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