If the change in electrical potential is large enough, it evokes an action potential, which is transmitted along the axon of the receptor cell, into the spinal cord.

If a receptor tyrosine kinase ( RTK ) is involved in activating the pathway, the isozyme PLC-γ has tyrosine residues that can become phosphorylated upon activation of an RTK, and this will activate PLC-γ and allow it to cleave PIP < sub > 2 </ sub > into DAG and IP < sub > 3 </ sub >.

If D1 receptors were a critical component of the mechanism of AAP blocking just the D1 receptor would improve the psychiatric symptoms that are exhibited.

If D1 receptor binding was a critical component of the action of antipsychotics they would need to be present in maintenance dosages.

If the compression forces were closer to the fovea the resulting compression would cause a greater amount of macropsia at lower field angles with little effect at higher field angles where the receptor distribution is not as compressed.

If a neurotransmitter binds to a receptor with a reversal potential that is higher than the threshold potential for the postsynaptic neuron, the postsynaptic cell will be more likely to generate an action potential and an excitatory postsynaptic potential will occur ( EPSP ).

If receptor activation takes place in a lipid raft, the signalling complex is protected from non-raft enzymes such as membrane phosphatases.

If the target cell has a known specific pinocytotic receptor, drugs can be attached and will be internalized.

If a ligand for an orphan receptor is later discovered, the receptor is referred to as an " adopted orphan ".

If an endogenous ligand is found, the orphan receptor is " adopted ".

If the protein is a receptor, ligand binding may result in agonism or antagonism.

If we were only to look at the eye-optic channel at the instant that light hit the receptor surface, we would know nothing of depth of field, focus, or perspective.

If he had married her, he'd have been asking for trouble.

If she, Pamela, were being held responsible for his crimes, then hers must be the final act of expiation.

I showed her the shower and tub, and she said, smiling, `` If you really don't mind, I think I'll get clean in the shower, then soak for a few minutes in your tub.

If it were not for an old professor who made me read the classics I would have been stymied on what to do, and now I understand why they are classics ; ;

If it were not that I knew who it was I could have mistaken it for my Aunt so well did her clothes fit him.

`` If Blue Throat has his way he'll keep us all cooped up in here for days '', he said.

If a work is divided into several large segments, a last-minute drawing of random numbers may determine the order of the segments for any particular performance.

If Wilhelm Reich is the Moses who has led them out of the Egypt of sexual slavery, Dylan Thomas is the poet who offers them the Dionysian dialectic of justification for their indulgence in liquor, marijuana, sex, and jazz.

If he thus achieves a lyrical, dreamlike, drugged intensity, he pays the price for his indulgence by producing work -- Allen Ginsberg's `` Howl '' is a striking example of this tendency -- that is disoriented, Dionysian but without depth and without Apollonian control.

If living Jews were unavailable for study, the Bible was at hand.

If he had been `` liquidated '' in some way, he would have become a martyr, a rallying point for people who shared his ideas.

If we examine the three types of change from the point of view of their internal structure we find an additional profound difference between the third and the first two, one that accounts for the notable difference between the responses they evoke.

If we remove ourselves for a moment from our time and our infatuation with mental disease, isn't there something absurd about a hero in a novel who is defeated by his infantile neurosis??

If we grasp this opportunity to build an age of productive partnership between the less fortunate nations and those that have already achieved a high state of economic advancement, we will make brighter the outlook for a world order based upon security and freedom.

`` If you become a Baptist, I will not '', Ann informed her husband, but sweeping her threat aside Adoniram continued to search for an answer to the personal dilemma in which he found himself.

Defoe then commented, `` If they Could Draw that young Gentleman into Their Measures They would show themselves quickly, for they are not asham'd to Say They want only a head to Make a beginning ''.

If his scholarship and formal musicianship were not all they might have been, Mercer demonstrated at an early age that he was gifted with a remarkable ear for rhythm and dialect.

If only for this modest masterpiece of military history, Blenheim is likely to be read and reread long after newer interpretations have perhaps altered our picture of the Marlborough wars.

If, as Reid says, `` nearly all his poetry was produced when he was not taking opium '', there may be some reason to doubt that he was under its influence in the period from 1896 to 1900 when he was writing the poems to Katie King and making plans for another book of verse.

If Robinson was a liar and a slanderer, he was also a very canny gentleman, for nothing that Pike could do would pry so much as a single word out of him.

If Gorton wanted peace and quiet for his complicated meditations this is where he should have had it.

If she wanted to borrow any sum of money in expecting the arrangements of Congress, it would not become a stranger, unknown to her, to offer himself for that purpose.

If the hardships of the winter at Valley Forge were trying for healthy men, they were, of course, much more so for those not in good health.

If his circumspection in regard to Philip's sensibilities went so far that he even refused to grant a dispensation for the marriage of Amadee's daughter, Agnes, to the son of the dauphin of Vienne -- a truly peacemaking move according to thirteenth-century ideas, for Savoy and Dauphine were as usual fighting on opposite sides -- for fear that he might seem to be favoring the anti-French coalition, he would certainly never take the far more drastic step of ordering the return of Gascony to Edward, even though, as he admitted to the English ambassadors, he had been advised that the original cession was invalid.

If it were not for the effect of destructive agencies, sawtimber growth would have been nearly twice as great as the 47 billion board feet in 1952.

If the church has followed the plan of cultivation of prospects and carried through a program of membership preparation as outlined earlier in this book, the process of assimilation and growth will be well under way.

If untreated, it results in mild to severe impairment of both physical and mental growth and development.

If the current trends continue, some population growth can be foreseen for the coming years.

If the estimate of were not significantly different from 0, we would fail to find evidence that changes in the growth rate and unemployment rate were related.

If the values are, then the growth rate between measurement and is.

If they had ₤ 1000 in assets they could get a free ; the goal of the government was to speed up modernization and economic growth.

Responding to a report, which he described as " a red herring ", on the growth of antisemitism since the beginning of the Gaza War, he has said: " If there has been a rise I am not surprised.

If left untreated, this growth can spread beyond the lung in a process called metastasis into nearby tissue and, eventually, into other parts of the body.

If vellum is stored in an environment with less than 11 % relative humidity, it becomes fragile, brittle, and susceptible to mechanical stresses ; if it is stored in an environment with greater than 40 % relative humidity, it becomes vulnerable to gelation and to mold or fungus growth.

If growth is not limited, doubling will continue at a constant rate so both the number of cells and the rate of population increase doubles with each consecutive time period.

If the growth rings are more parallel to the width, then the plank is said to be slab-cut.

If the leaf canopy is destroyed or thinned, the ground beneath is soon colonized by a dense, tangled growth of vines, shrubs and small trees, called a jungle.

If the latter is too hard, the roots will not penetrate it readily and, as a result, the plant will be pushed up and out of the earth during the process of growth.

If we suppose that Persephone stayed with Hades for four months and Demeter eight months, corresponding to eight months of growth and abundance to be followed by four months of no productivity, we see the parallel with the Mediterranean climate of ancient Greece.

If administered early in the pregnancy, methotrexate terminates the growth of the developing embryo ; this may cause an abortion, or the tissue may then be either resorbed by the woman's body or pass with a menstrual period.

If instead of assuming a constant rate of usage, the assumption of a constant rate of growth of annually is made, the resource will instead last

If a primary tooth is extracted before its succeeding permanent tooth's root reaches ⅓ of its total growth, the eruption of the permanent tooth will be delayed.

If we divide through by Y and convert each change into growth rates we get:

If pruned, the plant responds by producing fast-growing young vegetative growth with no flowers, in an attempt to restore the removed branches.

If y is directly proportional to x, then the graph of y as a function of x will be a straight line passing through the origin with the slope of the line equal to the constant of proportionality: it corresponds to linear growth.

If the positive growth trends of Pleasure Ridge Park keep pace with the negative growth trends in the Louisville suburb of Jeffersontown, Pleasure Ridge Park will overtake Jeffersontown as the largest Louisville suburb on the Kentucky side of the river in the next few years ( all of this pre-merger, of course ).

If Middletown ever had a recognizable town center or town square, it was lost in that rapid growth soon after World War II.

If the growth continues, it is possible that Atoka could begin to see the type of expansion currently underway across the Red River to the south.