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.
The NHTSA estimates that <u>85 %</u> of the 11,510 drivers with a BAC of .01 or higher who were involved in fatal crashes had BAC levels at or above .08.
<u>Explanation:</u>
The survey conducted by the “National Highway Traffic Safety Administration (NHTSA)” says that the driver with high BAC levels is the main cause for the fatal crashes.
The amount of alcohol mixed with the blood of a person is identified to know the blood alcohol concentration (BAC) level. The BAC level of the person is determined by taking into account the amount of alcohol consumed by the person, person’s weight, gender, genetics and drinking pattern. Increase in BAC level may leads to side effects and impairments.
Answer:
Explanation:
J is between H and K. If HJ=6x-5, JK=4x-6 and KH= 129, find the value of HJ
