Coition is an act in which both man and woman come into each other’s contact because of sexual lust for the progress of generation. A man inserts his penis into the vagina of a woman because of which both man and woman get real sexual pleasure. A man strokes with his penis into the vagina repeatedly because of this sexual pleasure. A woman also wants the continuity of strokes of the penis into the vagina. If this continuity continues for some time, they start to get great sexual pleasure. When this sexual pleasure reaches on peak, it is called orgasm. At this point both man and woman ejaculate. Sperms of man’s semen enter into the vagina through penis. Thus, seed is sown for the birth of new human being.
Coition or sexual intercourse is considered successful only when genital organs of both rub to each other for long time properly. This is the reason that erectness and hardness of the penis is an essential condition for a man. Which body organs are helpful for the erection and hardness of the penis? Besides it, what a man should do to get enough erection and hardness of the penis? Both the things are important for a man so that he may complete the work of nature. Here we will consider over both these questions mentioned above. First, we will mention that body portion which controls the penis. This organ is mind.
There is a special region at the cortex of cerebrum of man, which arouses sexual urge of a man if it gets stimulation. Crores of neuron cells, which make brain, have been developed in lacs of years. Each neuron has two traits. One trait of neuron guides a man to earn livelihood for sustaining the life and second trait of neuron keeps on exciting a man for sexual intercourse so that human being keeps on producing new generation. Before lacs of year when human body was asexual, each cell searches its food separately and involve in asexual coition.
After some time, such creatures felt that the responsibility of this work should be given to the nervous system. Therefore, brain and each cell of nervous system took birth in the beginning, nature ordered both of them two deeds- first, search for food and search for partner to make sexual relations. Because, each cell of human body has a trait of which we can understand it easily. Sexual urge of a man becomes to arouse only when a man looks a woman, hear her voice and with the smell of her body.
Big changes take place into the brain at the period of sexual excitement. Pressure of the blood becomes high in the blood arteries, which belong to the brain and sufficient blood supplies in the brain.
Two other points become active at the time of sexual excitement. These points are center of temperature controller and the point where sugar is digested. Temperature of the body becomes high at the time of coition so that rapid common chemical changes into each cell keep on continue easily.
In this period of sexual excitement, spinal cord remains active along with the brain. Erection center situated at the lower portion of the spinal cord keeps on stimulating to those nerves, which supply the blood into the penis. All the pores of the skin also keep on stimulating to the brain through spinal cord and brain stimulates all the body organs and all the blood arteries.
In this period of stimulation, prostate gland and seminal vesicle keeps on continue their jobs. Prostate gland puffs in the previous steps of sexual intercourse. Too much secretion excreted from the prostate gland consequently too much blood starts to fill into it. Each fiber of the cells becomes stimulate. There is a psrostatic muscle in circular form at the origin place of urethra opening from where urine comes out from the urinary bladder. This muscle contracts completely so that semen that is about to ejaculate may not enter into seminal vesicle. A kind of mucus fills into the prostate gland and varumontanum puffs by filling the blood. The path of prostate gland becomes completely closed at this portion. There is easiness in ejaculating semen because of the contractions that take place in the form of contracted muscles of the prostate gland.
Seminal vesicles start to stretch as sexual intercourse starts. There is much contraction in the walls of seminal vesicles at the time of ejaculation. At the time of excitement, a kind of dilute substance excretes from these glands and glans of the penis becomes wet so that the penis may enter into the vagina easily. Besides it, this fluid smoothens the way of urethra so that semen may come out easily. It is considered that soft and tender veins of the glans become too much sensitive after the excretion of this fluid. This sensitiveness becomes the source of great sexual pleasure during coition. This fluid not only exudes only at the time of sexual intercourse but also it excretes when a man thinks about sex. This is a natural secretion not semen at all.
Glands that produce hormones and fluids keep on working continuously at the time of sexual intercourse. Both ends of the Hypophysial gland start the production of special kind of hormones, which are very essential for the contraction in the muscles so that sexual organs may act their work properly. A kind of fluid excretes from the thyroid gland too so that a process of oxidization keeps on continue without obstruction at the time of sexual intercourse. This process of oxidization stimulates all the changes of tissues. There is a need of very much activeness in the adrenal glands too so that blood pressure may be high and sympathetic nervous system may be well. At this time, body starts to absorb to the inner secretion of the testicles and supplies into needed organs of the body.
At this time, each portion of the body becomes active and the glands, which produce sputum, make sputum in sufficient quantity. Sweat glands also become active and heart beating become high but gently. Lungs stretch and contract more rapidly than its normal movement. Contraction of the muscles becomes high in throat, stomach, small and big intestines and anus. Mostly changes appear into the penis. All the arteries of the penis fill with blood completely and a little blood keeps on returning only for tissues’ oxidization.
Erection into the penis:-
Erection of the penis is too much important for sexual intercourse because with erect penis sexual relation cannot be established. Several aspects are helpful for the erection of penis. Mainly, there are three portions of the penis.
There are three portions of the penis head or glans, shaft and root of the penis. Root of penis starts from the stomach. The penis is hollow from the inside like sponge. When its arteries fill blood into its hollowness, it swells and gets erection.
There is a point near about the spinal cord, which controls the erection of the penis. This point is situated at the lumbar region and below the naval. There is also a point near about the first point, which controls the capacity of ejaculation. Both points work with the help of each other. There are two points at the spinal cord of a woman too, which control her sexual excitement and ejaculation.
Erection of the penis is the result of mental process to some extant. When a man thinks about sex, the penis becomes erect. There is a reflex action in the erection of the penis. We can move our hand and feet according to our wish but we cannot stimulate to the penis according to our wish. As our mouth waters as we see (jalebi) similarly, penis of the man becomes erect by seeing a very beautiful woman. A penis becomes erect by two ways.
1. Mental viz when sex ideas come into the brain.
2. Glans of the penis or rubbing or touching to the penis
It is called reflex action.
Body of a man becomes ready for sex in this way as mentioned above. When a woman comes before a man and her voice, smell of her body and touch of her body or sexual intercourse with woman in imagination by the man, the sexual urge is produced in the cerebrum. When libido arouses in a man, sexual urge reach at the stimulating point of spinal cord and such sex urge reach into the penis. The result of it is that the penis becomes erect. This process is called stimulation of the penis too.
When the penis of the man especially glans of the penis is touched by the woman’s hand or vagina of the woman, this information reaches at the stimulating point and this stimulating point send this information to the penis consequently penis becomes erect. In this condition, there is no need to connect with the brain. When erect penis touches with the vagina of the woman, vagina also becomes excited.
When a man thrust his penis into the vagina repeatedly, stimulation starts to reach in great quantity at the stimulating point through the way of sensitive nerves of the penis. At this time, stimulation from the swollen prostate and seminal vesicles keeps on reaching to the stimulating point. These stimulations keep on giving strength and stimulation to the stimulating point. This step can be called stimulating point of blood arteries and veins.
As coition starts as provocations of brain and veins keep on increasing and contraction of veins reaches at its final spot after increasing.
At the final stage, fuse of stimulating point breaks. Great contractions start to take place in the urethra, prostate, seminal vesicle and muscles of the root of the penis. In this way semen of a man ejaculate and the penis returns in its normal stage.
Stimulations and ejaculation in woman:-
Both man and woman become sexually excited from the same reasons. Stimulation of sexual urge is same in both too. Because the penis is out of the body and this is the reason that changes of it after stimulation can be observed easily but vagina of the woman is in hidden form and this is the reason that changes of stimulation cannot be observed. When a woman gets aroused sexually, vagina of the woman swells because of the presence of excessive blood. Opening of the vagina opens to some extant and a contraction comes into the uterus. A kind of secretion excreted from the vagina and it becomes wet so that there is no harm to the vagina while thrusting penis into the vagina.
Both man and woman get sexual pleasure when man strokes his penis into the vagina of the woman. When this pleasure reaches on climax, both man and woman ejaculate. Semen comes out when man ejaculates but nothing comes out when woman ejaculates. It is said in general that menstruation comes out. It is a wrong belief. Of course, a lubricant substance comes out from the vagina when a woman is too much excited. This mucus substance comes out in excessive quantity. Perhaps, sexologists have considered this lubricant fluid to be semen or menstruation.
Different person have different kinds of sexual urge. Some person gives no importance to the sexual intercourse whereas life of several persons moves around the pivot of sex. The difference of sexual urge in different kinds of persons is not the difference of body. Masculinity of a man becomes affected due to several things. Activity of the glands that produce hormones, mentality and surrounding all has its role in a man’s masculinity. Heredity and nourishment affects the masculinity of a man.
A scientist says that a man with lack sexual power is the son of man whose sexual power was also less. Sexual power of such persons cannot be increased too much by several artificial means. It should be remembered that some persons are such kind who show no interest in sex outwardly but they have great sexual power. Besides it, their sexual power has been diverted into another direction. It may be that sexual urge of a man has been suppressed because of fear, anxiety or mental disturbances.
Not only sexual power but also the period of sexual intercourse is different in different people. It can be said that emotional persons are sexually strong and live in stimulated surrounding as musicians, artist and poet.
Ups- downs in sexual desires:-
Both nervous system and glands that produce hormones should be in active form. This condition is essential for sexual intercourse. It has been mentioned earlier that a kind of relaxation takes birth after sexual intercourse and in this situation; sexual urge is not produced though all the glands have been excreting sex hormones. This stage stays for short period in a healthy man and the penis becomes erect after sometime. There are other reasons of ups-downs in sexual urge in a man.
Sexual urge in several women becomes high before and after some days of the menses. It is observed that sexual urge in man reaches at its climax once in a week and perhaps it is the reason that mostly married couples establish sexual relations once a week.
Sexual urge of man affect due to weather and atmosphere.
Sexual urge of a man becomes high if he practices physical activity in a proper way but excessive physical exhaustion can be dangerous for health. Sexual urge of those persons reduces due to excessive mental work and excessive physical exhaustion.
Finally, it is no need to tell that if a man is unhealthy, sexual urge of this kind of man can be destroyed fully. Lots of energy of veins ends when a man makes sexual relation. If there is a lack of masculinity in man, sexual urge can be disappeared fully. A body has energy in it as an experienced economist has money. He does not spend his power in urgent work. Coition is also such kind of work.