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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.
What is Class Crinoidea? This Class includes the sea lilies and the feather stars. What makes them different from the other Echinoderms is the placement of their mouth and anus
i need information about speen of animals and stuff like that for example a cheetah speed
FORMATION OF SOIL Evolution of Earth took place five to eight billion years ago when it was a red hot magma (molten rock). It took millions of years for the magma to cool down
How does parafunctional habits lead to implant failure Parafunctional habits like bruxism and clenching create mechanical and biological problems due to overloading and is cons
Development of Heart in Amphibians The heart and the surrounding pericardial cavity build up from lateral mesoderm. After gastrulation, the mesodermal mantles carry on to gro
Q. How does the female gamete move from the ovary to the uterus? The female gamete released from the ovary falls into the surrounding abdominal cavity and is collected by the F
Limnology : It is the study of organisms present in rivers or fresh water lakes. Limnology is also called as freshwater science. This is the study of inland waters. Limnology is of
How has the position of the stomata changed in some plants to prevent excessive water loss by transpiration? In some plants that have leaves that be given too much sunlight the
The Alanine cycle Follow the alanine link in the alanine cycle. The process goes as under: 1) Pyruvate formed from glycolysis in the muscle is converted to alanine by t
What is nidation? In which phase of the menstrual cycle does nidation occur? Nidation is the implantantion of the embryo in the uterus. Nidation happens around the 7th day afte
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