??The breast is the female mature important symbol, is one of feminine most important nature sensitive areas, is also the secretion milk, nurtures the descendant the organ. The breast to the child is the maternal symbol; To the male is the object which beautiful and thirsty (desire) looks. Therefore in the movie, the television, the pictorial, literary work’s female always has the plentiful breast. The breast to the female is the important reproductive organ, it is also playing the influential role in the natural activity, but the people have often neglected this point. Breast’s innervation and nerve ending’s quantity is very rich, the breast and other reproductive organ’s relations are very close.
??In the natural response cycle’s excitation period, the breast the first evidence which strengthens to the natural intense response is nipple’s erection responded that this is in the nipple the rich smooth muscle fiber after receiving the stimulation has the dependent contraction result. Two nipple’s responses are not frequently the synchronization appear, a possibility already achieved erects completely and swelling, but another actually presents the hysteresis. In falls the nipple possibly instead protrudes by theirs repose period condition, probably is in half erection position, if in this kind falls is restores with difficulty, that could not see that nipple’s response referred to drafts.
??The full erection response may cause the nipple length compared to before not to stimulate increases, generally increases 0.5-1.0 centimeter, responded that may also make the nipple basis diameter to increase 0.25-0.5 centimeter. Usually the nipple big and prominent often has the small tumescent erection tendency forward compared to the size normal person. The nipple is specially small when is also very difficult to the natural stimulation to make the very strong response, but the nipple specially small situation sees not much.
??The excitation period second physiological change is the breast vein tree pattern delimitation and the expansion increases. If the breast has the enough volume, underneath will present the table shallow vein hyperemia, but very possible to arrive excitedly later period only then becomes more explicit. The big breast usually displays the very obvious vein tree pattern the expansion. Breast vein tree’s hyperemia to central extension when usually does not achieve the areola area.
??Will be approaching the platform time, breast’s actual volume will increase obviously, this will be the breast depth portion vein hyperemia response result. Is at the reactive state woman when the erection response occurs, lower part mastoptosis’s hyperemia changes in observes, if the bride’s side takes time the supine decubitus, the breast volume will increase comprehensively will be more obvious. May see the obvious areola hyperemia phenomenon in the excited later period. The excitation period responded the performance degree and has the time difference to be very big, because often human from time to time different. The close neighbor will erect nipple’s areola in the platform time to be also tumescent, by now caused the human to create one kind of illusion frequently, probably will erect the nipple already the part abated. Until areola swelling after retrogression time retrogression, the people only then may see the retrogression late still maintained the erection the nipple.
??Before the female experiences the final high tide impulsion, has not nursed the feminine breast’s size may compared to usually increase 1/5-1/4, has nursed the feminine breast will usually not present the breast volume obvious increase. In this anatomy displays the difference possibly is because feeds the milk breast to increase in the milk production process median vein divergence. The baby sucks can increase the vein the divergence, and tends causes the nature is anxious when in-depth blood vessel’s hyperemia to respond slows down. Very obvious, not only the udder size increases under the natural intense influence with the blood vessel hyperemia physiological reaction related, but also plays the support role with the composition breast small leaf the Fiber structure ingredient substantial degree to concern. Expands excessively in the nursing early time common breast, this will damage these support Fiber structure’s validity. Therefore, may understand after the nursing the feminine breast makes the proper obvious natural response with difficulty to the natural stimulation.
??After the nature enters the platform time anxiously, before the breast, side, even underneath presents the pink frequently the heterogeneity. In fact this kind of spot dome-shaped skin rash first appears in the epigastrium, spreads again to the breast surface, this kind of skin surface’s blood vessel hyperemia responded that is called the nature to blush.
??The high tide period breast does not have what idiosyncrasy. The nipple erection and the areola swelling already determined that the vein tree breaks out appears very striking, has not nursed the breast compared to before has not been stimulated the baseline to have the remarkable expansion, the nature blushes very explicitly. The breast even possibly appears shivers the phenomenon.
??The retrogression time’s arrival is the rapid retrogression which and synchronized areola swelling vanishing blushes by the nature for the signal. But the nipple erection abates slowly, when after areola swelling retrogression, the nipple erection and became striking, was they have experienced for person’s impression by the new stimulation influence or the sequential erection which, both the stimulation function sent responded, the people said this kind of false appearance was “the false erection”.
??Generally speaking, has sucked the breast in-depth blood vessel hyperemia retrogression has not been slow, but has nursed the breast hyperemia abates quickly. What may see frequently, after the high tide had finished, the breast swelling will still maintain 5-10 minutes, walks the line as for the breast surface’s shallow table vein tree even to be possible to preserve is very long. In the vein tree abates completely normal does not reveal the condition before them, the erection nipple already completely restored. This kind both has the table to be shallow and has in-depth blood vessel hyperemia influence continually existence, not has sucked breast’s unique phenomenon, possible as a result of platform time areola vein clump of excessive expansion result. In the retrogression time, this kind of vein clump expands excessively causes the vein drainage to reduce speed to in-depth vein blood flow.
??The pregnancy period areola’s swelling growth is a pregnancy influence early characteristic. Pregnancy 1 month later will present the vein tree’s clear distribution in the breast surface, they will maintain at the entire gestation period and the post-natal stage. The primary pregnancy’s woman will present the breast side the sensitive area, this region’s scope will expand along with the pregnancy progress. Pregnancy 3 months later the breast volume will increase rapidly, this is the result which the breast blood vessel and the gland obviously increase. After gestational injectivity stimulation, the primary pregnancy’s woman will present breast’s serious touching a sore spot in the sexual climax stage, especially will be more obvious by the swelling nipple and the areola part. When to pregnancy and latter 3 months, this kind of breast will touch a sore spot will reduce obviously. Because in time pregnancy and latter 3 months when the breast has presented the cone nursing shape characteristic, its volume has increased about 1/3 compared to the non-pregnancy stage, therefore the high level nature anxious cannot cause the breast volume frequently further obviously to increase. But the nipple erection and the areola swelling response exist in the entire pregnancy period.
??When post-natal 2nd and the 3rd month, the breast is decided to the natural stimulation’s response by nursing or not. If comes through the hormone control or the fetter oppression’s method to suppress the milk artificially the production, then erected beside except nipple Shang You, breast’s other natural response phenomenon will receive obviously damps, even when the nature achieved the platform time anxiously was also so. Until the post-natal 6 months, these women’s breast responses can be able to restore.
??Although nursing woman’s breast volume will not have again in the natural response increases obviously, but they will present one unusual response way frequently. Often many nursing women in makes reaction time to the natural stimulation cannot control spray the milk. After high tide or, the milk may overflow from the two-sided nipple, this kind of phenomenon not only sees in the sexual intercourse process, may also jianyu in the masturbation process