The common desire by the lower and middle classes in middle and south america is land reform.
Answer:A
Explanation:
It had security council to respond to global crises
Answer:
Please add the options :) :)
Answer:
Explanation:
Action potential
It is the potential or power or electrical energy required to generate impulses and provides communication between the neurons is called action potential. Normally cell membrane consists of potential is called resting membrane potential() -70mV. The action potential is due to exchange of different ions across the membrane.
Phases of the action potential in a neuron are
i. Depolarization- it is caused by the influx of sodium and calcium ions through the opening of voltage-gated sodium and calcium channels. sodium ion influx is rapid than the calcium ions membrane potential -70mV to +30mV.
ii. Repolarization - It causes the efflux of potassium ions into the cell through the opening of potassium channels. the membrane returning to resting membrane potential.
iii. After- Hyper polarization - in this stage the potassium channels remain open and causes re polarization and comes to normal membrane potential.
The generation of impulses(depolarization) in neuron mainly depends on influx sodium and calcium ions without these ions, no action potential developed and neuron firing does not occur.
If the drugs inhibit these channels, no depolarization, no action potential, no neuronal firing or communication.
The channels involved in an action potential are voltage-gated sodium channels, potassium channels, and calcium channels.
The action potential is required for transmission of information one are to another area in the body.
The responses to different stimuli is due to action potential.
Answer: Tell him to check whether the wireless card's hardware switch is turned on.
Explanation: If a group of sales team member have arrived in the new city presently and till a-day-before , their wireless connection was working properly .The the first step should be to ask them to check whether the hardware of wireless card is switched-on or not.
Even though all the configurations of the device are properly connected ,it won't work until the switch of the hardware is on position .this will turn-on the device and then only wireless connection can work.
