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Acetylcholine, a well known neurotransmitter, plays a critical synaptic role in the initial formation of memory. Chemical blockage of the acetylcholine receptors makes it harder to learn and remember even in healthy young people. Evidence for it comes from pharmacological studies conducted on human subjects wherein blockage of muscarinic cholinergic receptors by drugs such as scopolamine impaired the encoding of new memories. Conversely, drugs which activated nicotinic receptors enhanced the encoding of new information.
Similarly administration of scopolamine into the hippocampus impaired encoding of spatial memory. It has also been found that administration of drug that increases the level of acetylcholine in Alzheimer's disease (characterised of memory problems) improves memory by inhibiting the action of acetyl cholinesterase, an enzyme that breaks down acetylcholine and reduces its amount. Overall it can be said that decreased acetylcholine in the brain cause problems with memory function.
Microtubule assembly: A) generally originates in the centrosome. B) occurs only during mitosis. C) occurs randomly throughout the cell. D) is regulated by myosin. E) is inhibited d
Q. What is Peri-Implant Disease? The term peri-implantitis is used to describe the boneloss around an implant. This may be induced by stress or bacteria or a combination of bot
Digestion of various disaccharides of the diet The enzymes from brush border membrane of small intestine complete the digestion of various disaccharides of the diet and the pro
Q. What is the hemoglobin F? Why does the fetus need different hemoglobin? Hemoglobin F is the hemoglobin found in the hemoglobin and mammalian fetus. A is the normal hemogl
What is inheritence and what is the relation between mendel and darwin?
how connective tissues are like an estuary
what is the mode of nutrition in fungi?
Define the Disorders due to the iodine deficiency? Mild goitre, i.e., a larger thyroid gland than normal. The mildest form of goitre ranges from those only detectable by to
Scaling Instrumentation of prothesis Although stainless steel is generally the most effective material for removing calculus, it cannot be used with implants, because it scratc
Ethnobotany : This is the study of relationship between tribals and plants. Ethnobotany is from "ethnology" - study of culture or "botany" - study of plants. This is the scientific
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