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Botulism toxin (Botox) reduces wrinkles by paralyzing the injected muscle. It does this by preventing the exocytosis of ACh-containing vesicles with the motor neuron axon terminal membrane. Which of the following would you expect in a motor unit affected by Botox? Select the CORRECT statement.
-Action potentials in the motor neuron and muscle fibers would be absent, even after a suprathreshold graded depolarization of the motor neuron.
-At the motor endplate, permeability to Na+ and K+ will remain low after excitation of the motor neuron.
-In the muscle fibers, intracellular free [Ca2+] would be elevated and intracellular [ATP] would be depleted, thus blocking muscle contraction.
-Acetylcholine esterase in the synaptic cleft would be more active than normal, thus reducing the activation of nicotinic ACh receptors.
Why is the correct answer correct and the wrong ones wrong? Having trouble understanding the mechanism.
It is a very curcial concept to understand how the immune response is mounted against viruses, bacteria, protozoans and helminthes. For an effective immune response, both innate and adaptive immunity should work together.
This Project report elaborates a critical review of important elements attached to Advanced Glycated End Products (AGEs). It is very crucial to understand the process called Millard reaction.
Soil stabilization is the permanent physical and chemical alteration of soils to enhance their physical properties. Stabilization can increase the shear strength of a soil and control the shrink-swell properties.
This assignment has three parts which contains questions related to Microbiology. It contains basic principles of microscopy, staining techniques in microbiology and microbial growth in the food industry.
Lipid metabolites are often seen as key elements in cellular signaling. Is this unique? Please provide several examples of the function of lipids as key elements in signal arrays and list the biologic functions these signals affect?
Please describe how one might search for chemical structure, biologic function relationships, involving small molecular weight lipophylic compounds. Provide one example.
Write a case study which detailing a scenario of a patient being investigated in the Haematology laboratory.
The use of PCR and genetic approaches in biotechnology
Glucose oxidase is an enzyme that can be used for measurements of glucose levels by combining this reaction with an oxygen probe.
What phenotypic ratio would you get if you crossed a white mouse and a heterozygous brown mouse?
Prepare an essay on nosocomial infection.
To increase the awareness of monitoring and recording the blood pressure of patients and practice measuring blood pressure in a safe environment.
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