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ENDOPLASMIC RETICULUM (ER)Eucaryotic celIs have two major compartments- nucleus and cytoplasm. Cytoplasm was known to have no structure until the discovery of electron micrsscope. That cytoplasm is permeated by a membranous network called endoplasmic reticulum (ER), was revealed only after the introduction of electron microscope. Endoplasmic reticulum is a three dimensional network of membrane channels which constitutes more than half of the total membrane of the cell, ER is a highly folded and convoluted structure and forms a single continuous sheet enclosing one continuous sac. The interior of the sac is called "cisternal space" or "ER lumen". This is separated from the cytoplasm also called cytosol by a single membrane which mediates the communication between these two compartments. ER provides the cell with a compartment for storage of substances to be kept separate from cytosol. In addition, it has a key role in the biosynthesis of macromolecules. ER is a double membranous organelle which consists of interconnecting flattened sacs called cisternae or interconnected tubules or vesicles. Cisternae are temporary storage sites for nutrients (Figure shown below).
Among neonates, IE typically involves the tricuspid valve of structurally normal hearts and is associated with very high mortality rates. It is likely that many of these episodes
ALEURONE GRAINS - Also known as Plant lysosome , because they contain hydrolytic enzymes. Consists of Proteins. They are also known as Aleuroplast because they are ric
HEAR T - The cells called cardiocytes of atria of the heart secrete peptide hormone called atrial natriuretic factor (ANF) in response of an increased return of the deoxygen
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What are the benefits of Soil testing Soil testing is done to assess the nutrient supplying capacity of the soil. The data obtained as a result of testing is useful for recom
Q. What are the mechanisms of hemorrhage contention called? The physiological mechanisms of hemorrhage contention one of them is blood clotting are generically named hemostatic
Explain the Maintenance of Weight Loss? Once an individual has managed to lose weight to a desirable level, it must not be assumed that the weight loss will be maintained autom
Define Disadvantages of Direct Microscopic Count? 1. Small cells are difficult to see under the microscope and may be missed. 2. It gives total count, i.e., both live and de
Objectives of Diabetes Counselling 1. Facilitating decision to start treatment and change life style 2. Providing psychological, social and emotional support for a.
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