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Blood is composed of blood cells suspended in blood plasma. Plasma, which constitutes 55% of blood fluid, is mostly water (92% by volume), [ 2] and contains proteins, glucose, mineral ions, and hormones. The blood cells are mainly red blood cells (erythrocytes), white blood cells (leukocytes), and (in mammals) platelets (thrombocytes). [ 3]
In whole blood (g/cm 3) In plasma or serum (g/cm 3) Water: Solvent 0.81-0.86 0.93-0.95 Acetoacetate: Produced in liver 8-40 × 10 −7: 4-43 × 10 −7: Acetone: product of bodyfat breakdown 3-20 × 10 −6: Acetylcholine: Neurotransmitter of the parasympathetic nervous system: 6.6-8.2 × 10 −8: Adenosine triphosphate: Energy storage total 3. ...
Hemorheology, also spelled haemorheology ( haemo from Greek ‘αἷμα, haima ' blood '; and rheology, from Greek ῥέω rhéō, ' flow ' and -λoγία, -logia 'study of'), or blood rheology, is the study of flow properties of blood and its elements of plasma and cells. Proper tissue perfusion can occur only when blood's rheological ...
A blood cell (also called a hematopoietic cell, hemocyte, or hematocyte) is a cell produced through hematopoiesis and found mainly in the blood. Major types of blood cells include red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). Together, these three kinds of blood cells add up to a total 45% of the ...
Hemoglobin ( haemoglobin, [ a] Hb or Hgb) is a protein containing iron that facilitates the transport of oxygen in red blood cells. Almost all vertebrates contain hemoglobin, [ 3] with the exception of the fish family Channichthyidae. [ 4]
Capillaries join the arteries and veins. The circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the entire body of a human or other vertebrate. [ 1][ 2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia ...
Blood vessels are the structures of the circulatory system that transport blood throughout the human body. [ 1] These vessels transport blood cells, nutrients, and oxygen to the tissues of the body. They also take waste and carbon dioxide away from the tissues. Blood vessels are needed to sustain life, because all of the body's tissues rely on ...
A blood type (also known as a blood group) is a classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs). These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system.