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HUMAN ANATOMY

 

The female  reproductive  system
            The female reproductive system consists of two ovaries, oviduct, uterus, cervix, vagina, accessory genital glands and mammary glands. Ovary is the main reproductive  organ. It produces ova and secretes the female sex hormones, the estrogens and progesterone.  Human ovary measures about 3cm in length, 2cm in breadth and 1 cm in thickness. It has an ovoid shape. It is situated near the kidney and remains attached to the abdominal wall by ligaments.
            Each ovary is surrounded by the connective tissue: its interstitium  is called the stroma and is composed of the connective tissue containing blood capillaries and nerves.  The ovary consists of a number of germ cells, the ocytes which are surrounded by stroma cells to form follicles.  In human sex  female, a number of such follicles develop during each cycle called the  menstrual cycle but only one reaches full maturity. The fully grown mature follicle is called the graffian follicle which many layers of cells and the ovum.  The primary ovarian  follicle is at first a single cell but under  stimulation of FSH from the  pituitary  gland, new cell layers are added which surround  the ovum to form graffian follicle.  The cells of the  follicle synthesize the female hormone, estrogen, when LH from the pituitary gland  stimulated the ovary.  The ovum is released from the mature graffian follicle by its rupture following the action of FSH and LH.  It is ovulation. The follicular cells lining the ruptured graffian follicle become enlarged and the follicle thus changes into the corpus luteum which produces progesterone hormone.
            The duct system consists mainly of two fallopian tubes, a uterus  and a vagina.  The fallopian tube receives the ovum released from the ovary, downward  to the  uterus.  The fabricated end of the fallopian tube facilitates the trapping downward movement of ovum.
            Each fallopian tube is a muscular tube starting  near the ovary from an open funnel shaped end.  The tube measures about 10cmin length human females.  The ovum released from the ovary enters into the fallopian tube through its open end, it them moves  towards the uterus.  The two fallopian tubes open into a strongly  muscular sac, the uterus.  The foetus  grows  in the  uterus during pregnancy. The human uterus measures about 8cm in length, 5 cm in breadth and 2 cm in thickness.  The inner lining of uterus is known as endometrial linings which is highly vascular and rich in glands.  The uterus opens into vagina.  The latter opens to the  exterior between urethra and anus.  The vagina receives the semen from  the male during mating.

The menstruation
            The menstruation is the series of cyclic changes in the  reproductive tract of female.  Unless pregnancy has taken  place,  these changes end with a discharge of blood carrying broken tissue materials through the vagina.  This monthly flow of blood is called menstruation.  The period of menstruation lasts of 3 to 5 days.   The period of menstrual cycle in human beings is about 28 days from start to end before  the next  cycle begins.
            Beginning from the age of 10 and 14 the menstrual cycle is repeated throughout the reproductive  life of the female  except for the period of pregnancy and lactation.  The cessation  of menstrual cycles making the end  of the reproductive  period  of woman, usually making the end  of the reproductive period of woman, usually occurs between 45 and 50 years of age and is known as menopause .

The sexual apparatus of male

            The sexual apparatus of a male human being consists of: (1) the urinary organs. The urinary system consists of the following The kidneys these are two in number and are located just above the back and in front of the spinal column or backbone.  The kidneys take up water, waste water, and impurities from the blood.  In this way the kidneys help to keep the blood pure.  The liquid mixture they pass is called  urine.  The use of tobacco and alcoholic drinks in excess injures the  blood pure and the body healthy and strong.  As far as  form, the kidneys the urine is carried by two ducts (called the urethra, one leading from each kidney) and  emptied into the bladder.  Her it is stored until we wish to discharge  it from our bodies.
            The urine is discharged from our body by a duct that leads though the external sexual relation, and this duct is called the urethra.  This process of discharging the urine is called urinating.  This is a perfectly natural act.  There is no more sin in urinating than in shedding a tear.
            Some of the sexual organs are on the outside of the body and some are on the inside.  Those on the outside of the body are perfectly familiar to all boys. The external organ through which the urethra passes is called the penis.  At the end of this organ is a sheath of loose skin, called the prepuce or forekin. In some boys the prepuce is quite long and tight.  When the boys of the Muslim race are young they are circumcised. This act consists in cutting of the portion the prepuce that  extends  beyond the head of the penis. The act is performed  on many boys in this country when they are only a few days old.  There are a number of reasons for this, for underneath there folds of the prepuce there hundreds of little  glands that secrete a substance that should be removed daily with water, or a wet rag.
            When this secretion is not removed it becomes white and hard, and very often causes irritation. Boys in this condition will often scratch themselves.  In many cases these boys do not get along well in school, they are nervous, have fits and spasms, and this scratching often leads  to the habit of self abuse.
            Underneath the penis is a bag, called the scrotum, in which are suspected two glands, the testicles.  Then leading off from the artery which descends into the scrotum are two small arteries, called spermatic arteries. They carry pure blood  to the testicles.  Leading back from  the testicles are two small  veins that separate from the spermatic arteries and called that spermatic veins.  Connected with each  testicles is a duct, called the "vas deferens"  that passes sup through the veins and over the bladder and becomes enlarged into the small vessel  called empulla. The empulla opens into  the urethra. Near the empulla and behind  them, are two large vessels, called the seminal vessels. These vessels called the seminal vessels. These vessels connect with the urethra by a male duct, at the point where the empulla do.  Surrounding the neck of the bladder, the lower portion of the empulla, the seminal vessels and deep  urethra is a very important gland, called the prostate gland. Connected with the urethra and only a short distance from the prostate are two small glands, called the cowper's glands.  These glans and vessels are all very tender.  They are protected by being  placed inside of the body. Because of bad habits many men suffer much pain from diseased conditions of the organs on the inside.
            I might at this point stage point out that while in woman the greater and more important part of the genital system is found inside the body, in the male the important  organs only two glandular structures the prostate and seminal vesicles and they secrete a fluid which acts as the vehicle for  the spermatozoa. It is in the testicles where the spermatozoa are produced in almost inconceivable number.
            The penis, to which I have referred, under certain conditions remains no longer in the flaccid condition, but hardens and becomes rigid. What happens is that, as a result of nervous stimuli, the penis grows larger and becomes  erect, the glands (the head, shaped like a truncated cone) becomes uncovered.  This phenomenon of erection is due to a capacity provided for in the  anatomical structure of the penis.  On both sides of the urethral canal which as I have stated above runs through the penis longitudinally, there is a spongy structure provided with erectile tissues of varying  size richly supplied with blood.
            A nervous stimulus causes the erectile tissues to fill with blood and so swell, white at the same time the escape of blood is partly or completed prevented.  The phenomenon is analogous that which takes place when a dry sponge is submerged in water.  The sponge becomes larger as a result of the filling of the  pores with water, and it will remain at this increased size as long as we prevent  the water escaping.
            As a result of erection the penis becomes in a better condition for procreation.  As this act proceeds there comes a point in the same, called the orgasm , when the extreme stimulation of the sexual nervous centers causes the spermatozoa, mixed with the fluid prostate and seminal vesicare to discharge suddenly from the male urethra.  This, in favorable circumstances, brings about the beginning of a new life.