Hey JedKampe, There are numerous drugs and conditions that can cause a false positive for cocaine not to mention human error. Substances that can cause a false positive drug test result: Amoxicillin is an antibiotic in the penicillin group of drugs. It fights bacteria in your body. Ampicillin is another antibiotic similar to amoxicillin.
When the nerve is damaged,the action potential remains between the electrodes and doesn't reach the second electrode (i.e potential difference remains positive and doesn't go into negative phase) , the biphasic action potential changes into monophasic action potential i.e with single phase. Source(s):E: biphasic action potential change into the monophasic action? Why does the biphasic action potential change into the monophasic action potential after nerve injury between the two recording electrodes?
The neurotransmitter at inhibitory synapses hyperpolarizes the postsynaptic membrane. The GABA A receptor is a ligand-gated chloride channel. Binding of GABA to the receptors increases the influx of chloride (Cl â) ions into the postsynaptic cell raising its membrane potential and thus inhibiting it. Arrival of an action potential at the synaptic knob opens Ca 2+ channels in the plasma membrane. 2  The influx of Ca 2+ triggers the exocytosis of some of the vesicles. 3  Their neurotransmitter is released into the synaptic cleft. 4  The neurotransmitter molecules bind to receptors on the postsynaptic membrane.