The normal membrane potential inside the axon of nerve cells is –70mV, and since this potential can change in nerve cells it is called the resting potential. When a stimulus is applied a brief reversal of the membrane potential, lasting about a millisecond, occurs. This brief reversal is called the action potential
<span>A stimulus can cause the membrane potential to change a little. The voltage-gated ion channels can detect this change, and when the potential reaches –30mV the sodium channels open for 0.5ms. The causes sodium ions to rush in, making the inside of the cell more positive. This phase is referred to as a depolarisation since the normal voltage polarity (negative inside) is reversed (becomes positive inside). </span>
<span>Repolarisation. At a certain point, the depolarisation of the membrane causes the sodium channels to close. As a result the potassium channels open for 0.5ms, causing potassium ions to rush out, making the inside more negative again. Since this restores the original polarity, it is called repolarisation. As the polarity becomes restored, there is a slight ‘overshoot’ in the movement of potassium ions (called hyperpolarisation). The resting membrane potential is restored by the Na+K+ATPase pump.</span>
The Correct Answer is A
Reasoning - Since the ani. had went into a different ecosystem and habitat amd mateded it had offspring with the originally some genetic along with some little different variations. In turn this is call Founders Effect
The Gonococcal Conjunctivitis is a bacterial infection caused by neisseria gonorrhoeae. This bacteria is also responsible for the STDs. The Gonococcal Conjunctivitis is highly dangerous and acute. For determining the course of treatment it is necessary to know the wait for the culture results. Although meanwhile, the patient can be given intramuscular ceftriaxone, high oral dose of amoxicillin, Ciprofloxacin (Ciloxan) ophthalmic drops.
The answer is D because the law of matter is to not to change or create