Quick Answer. The function of a synaptic knob is to change the action potential that is carried by axons into a chemical message. The chemical message then interacts with the recipient neuron or effector. This process is called synaptic transmission.
Over-the-counter (OTC) medicines that are recommended for head or pubic lice include: 1  Permethrin creme rinse 1% (such as Nix), which is a common first choice for treating head lice. 2  Shampoos containing pyrethrins and piperonyl butoxide (such as Rid), which are left on the hair for 10 minutes and then rinsed out.
Lice don't live longer than 2 days when they are not on a human. So you would only need to remove lice from items that the person with lice has used or worn in the 2 days just before he or she used lice-killing medicine. If you choose to remove lice from household items, here are some tips:1  To rid hair brushes, combs, barrettes, and other hair ornaments of lice, soak them in hot water [at least 130Â°F (54Â°C) ] for 5 to 10 minutes, soak them in isopropyl alcohol, or wash them with a shampoo that is used to treat head lice.ice don't live longer than 2 days when they are not on a human. So you would only need to remove lice from items that the person with lice has used or worn in the 2 days just before he or she used lice-killing medicine. If you choose to remove lice from household items, here are some tips: