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Cannulation : Typically blood is drained by gravity through two cannulae inserted into the superior and inferior vena cavae. During bypass, if the SVC and IVC are snared, the entire venous return to the heart is diverted to the pump (total cardio pulmonary bypass). Whenever the right side of the heart has to be opened, the patient has to be on total bypass. Otherwise, when a chamber is opened, air will enter the tubing, causing air lock and cessation of venous retu1-n. For an aortic valve replacement or coronary artery bypass, the right side need not be opened. So the operation can be done using a single, two stage venous cannulae passing through right atrium into the inferior vena cava (atrio-venous cannula). The oxygenated blood is returned through an arterial cannula inserted into the ascending aorta or femoral artery.
Upwelling zones of high biological productivity are found along the western coasts of the major continents. What causes this upwelling? a- cold currents moving from the equator tow
GROWTH CURVE - Sigmoid curve or stretched 'S' shaped curve is obtained showing - a - lag phase b - log phase c - in flaxion p
Q. What are the major biological functions in which chlorine ions participate? Like sodium cations, chlorine anions actively participate in the regulation of the osmolarity of
Q. Show Very low level of lactase activity? Very low level of lactase activity: at very low level of lactase activity all milk products must be eliminated, substitutes of milk
DEFECT S OF HEART 1 . Blue Baby syndrome (Cyanosis) - Due to persisting foramen ovalis in atrial septum even after birth, the impure blood from right auricles comes to
Q. What is viscosity? Viscosity is resistance to flow of a liquid. It is a measure of the resistance of a fluid to deformation under shear stress. It is commonly perceived as "
10 mcq question in the topic of plants of 9th standard
How is the structure of a mitochondrion well adapted for the activities it carries out? The mitochondrial membranes segregate the enzymes and reactants of the Krebs cycle, faci
What is digestion? Digestion is the breaking down of larger organic molecules obtained from the diet, e.g. carbohydrates, fats, proteins, into smaller ones, as glucose, fatty a
Name the enzyme present in saliva and say what type of food it acts on. The enzyme in saliva is salivary amylase and it acts on starch.
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