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New life begins when an egg from a woman is fertilised by sperm from a man. Eggs (ova) are made in the ovaries, and sperm in the testicles. The ovaries and testicles (gonads) also make sex hormones. The female reproductive systemThe female reproductive organs are the vagina, womb (uterus), fallopian tubes and ovaries:
The menstrual cycleHormones secreted by the ovaries and a small gland in the brain called the pituitary gland control the menstrual cycle. The average menstrual cycle is around 28 days. After a period, rising levels of the hormone oestrogen help to thicken the lining of the womb (the endometrium). At mid-cycle, an egg is released from one of the ovaries (ovulation). If the egg is fertilised on its journey down the fallopian tube, it lodges in the womb lining. If the egg is unfertilised, falling levels of the hormone progesterone make the womb lining come away. This is called a period, or menstruation. The cycle then repeats. When you want to have a baby you can improve your chance of getting pregnant if you know about ovulation and the ‘fertile window’ in the menstrual cycle. Read more on ovulation and the fertility . The egg (ovum)A woman’s entire egg supply is developed when she is still an unborn baby. At the start of puberty, the eggs are ripened inside the ovary and one is released every month. Each egg contains genetic material. At menopause, the ovaries stop making hormones and eggs are no longer ripened or released. Female reproductive system problemsSome reproductive health conditions women may experience include: The male reproductive systemThe male reproductive organs are the penis, the testicles, the epididymis, the vas deferens and the prostate gland:
Male reproductive hormonesHormones are chemical messengers made by glands in the body. Androgens are the hormones that make men ‘male’. Androgens are responsible for sexual functioning, fertility and secondary sexual characteristics such as muscle mass, height, deep voice and body hair (including the beard). The most important androgen is testosterone, which is manufactured in the testicles. The spermThe sperm is the male reproductive cell. Its role is to fertilise an egg. It contains the man’s genetic material. A sperm is tadpole-shaped and around 60 microns in length (one micron is a millionth of a metre). It has a lashing tail, which helps it to ‘swim’ towards a waiting egg. Sperm production continues throughout a man’s life, from puberty into old age but the quality of a man’s sperm declines from about age 45. Male reproductive system problemsSome of the reproductive health conditions men may experience include: Where to get help
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This page has been produced in consultation with and approved by:
This page has been produced in consultation with and approved by:
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Your mailing list is a data source that contains the information that Word uses to customize your letter. See Data sources you can use for a mail merge. If you need to sort or filter your mailing list, see Mail merge: Edit recipients. Add content to your letter that’s different for each person who receives it.
To insert other custom information from your mailing list, see add mail merge fields one at a time.
Go to File > Save. When you save the mail merge document, it stays connected to your mailing list for future use. To reuse your mail merge document, open the mail merge document. Choose Yes when Word prompts you to keep the connection.
Your mailing list is a data source that contains the information that Word uses to customize your letter. See Data sources you can use for a mail merge. If you need to sort or filter your mailing list, see Mail merge: Edit recipients. Add name, address, and other fields in your database through Merge Fields.
When you save the mail merge document, it stays connected to your mailing list for later use. To reuse your mail merge document, open the mail merge document. Choose Yes when Word prompts you to keep the connection. |