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Drugs modifying cardiac rate and force
This 24-slide slide set provides an introduction at new learner to intermediate level to some of the most common drugs that are used clinically to modulate the rate and force of contraction of the heart. The specific drug classes presented include: agonists and antagonists of beta-adrenoceptors, an antagonist of muscarinic acetylcholine receptors (i.e. atropine), cardiotonic agents including cardiac glycosides (i.e. digoxin) and miscellaneous other agents.
efaccena - 10/07/2018 - 9:39am
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Ligand-gated ion channels
Ligand-gated ion channels (LGICs) mediate passive ion flux driven by the electrochemical gradient for the permeant ions. LGICs are gated by the binding of a specific ligand to an orthosteric site(s) that triggers a conformational change that results in the conducting state, or by binding of endogenous, or exogenous, modulators to allosteric sites. LGICs are responsible for fast synaptic transmission in the nervous system and at the somatic neuromuscular junction.
efaccena - 24/02/2016 - 3:56pm
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Sympathetic and Parasympathetic Receptors made easy – Part 1
In this 6.5 minute video, the author diagrams the anatomy of the parasympathetic nervous system including pre- and post-ganglionic nerves, transmitters at the ganglia and organ systems.
hbenson - 24/06/2015 - 11:11am
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The Autonomic Nervous System
This 23 slide Powerpoint presentation is intended to introduce the reader to the function of the autonomic nervous system (ANS). Specific areas that are covered include: the basic organization of the motor ANS and its components; the sympathetic and parasympathetic outflows from the central nervous system (CNS) to peripheral organs: the basics of neurochemical neurotransmission within the motor ANS including key neurotransmitters and receptor types; important selected activities of the motor ANS and finally some misconceptions regarding the ANS that even the beginner should be aware of.
efaccena - 01/09/2017 - 1:57pm
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Dementia
Dementia is a term that describes a group of symptoms affecting memory, thinking and social abilities. Dementia isn't a specific disease; several diseases can cause dementia. Dementia is amongst the leading causes of death and disability in the global elderly population.
Vascular dementia is caused by damage to blood vessels in the brain. Blood vessel problems can cause strokes or damage white matter fibers in the brain.
efaccena - 29/05/2023 - 2:32pm