full transcript
From the Ted Talk by NWHunter: How do contraceptives work?
Unscramble the Blue Letters
Here's what has to happen for pregnancy to occur after sexual intercourse. Sperm must swim up the vagina, through the cervical onipneg, upwards through the uertus, and into one of the two fallopian tubes. If an egg, released during that month's olvoauitn, is in the tube, one sperm has a chance to fertilize it. cpaieevntrocts are designed to prevent this process, and they work in three basic ways. They block the srepm, disable sperm before they rcaeh the uterus, or suppress ovulation. Block is the slimpest. Male and felmae condoms prevent sperm from cnmiog into contact with the vaginal scape. That barrier is also why they, unlike other ccroepvntatie methods, are able to prevent transmission of certain sexually transmitted diseases. Meanwhile, the daiprgham, cervical cap, and sponge work by being placed over the cervix, barricading the entrance to the uterus. These contraceptives are sometimes called barrier methods and can be used with spermicides, an example of the second category, daibsle. A spermicide is a chemical that immobilizes and destroys sperm. Today's spermicides come as foam, cream, jelly, siteprosoupis, and even a thin piece of translucent film that dissolves in the vagina. These products can be inserted directly into the vnaiga before intercourse, or can be combined with block methods, like a diaphragm or condom, for added proection. The third category for preventing parncngey works by suppressing the action of an egg muntraig in the ovary. If there isn't an egg available in the fillaopan tube, there's nothing for sperm to fertilize. Hormonal contraceptives, including the pill, the ptach, the Depo shot, and the vaginal ring all release synthetic versions of various combinations of progesterone and estrogen. This hormone cocktail spruseepss ovulation, keeping the irammtue egg safely sequestered in the ovary. Synthetic peosrnetgroe also has a block trick up its sleeve. It makes cervical mucus too thick and sticky for sperm to swim through esaliy. There are other contraceptives that use multiple approaches at the same time. For example, many IUDs, or intrauterine devices, contain synthetic hormones which suppress ovulation. Some also contain copper, which disable sperm while also making egg ittopimnlaan in the uterus difficult. Block, disable, or suppress: is one strategy better than the other? There are differences, but a lot of it has to do with how convenient and easy it is to use each contraceptive correctly. For example, male condoms would be about 98% effective if everyone used them perfectly. That 98% means if 100 couples correctly used condoms for a year, two women would get pregnant. But not everyone uses them correctly, so they're only 82% effective in prcctiae. Other methods, like the patch and pill, are 99% effective when they're used perlftecy. But in practice, that's 91%. Spermicide is only 85% effective, even with perfect usage, and just 71% effective with typical uagse. Another important consideration in the choice of contraceptives are side effects, which almost exclusively affect women rather than men. Hormonal methods in particular can cause symptoms like headaches, nausea, and high blood pressure, but they vary from woman to woman. That's why these mdeoths require a prescription from a dtoocr. The cicohe of contraceptive method is a personal one, and what works best for you now may change later. stisetincs also cutoinne to research new methods, such as a male pill that would pevernt sperm production. In the meantime, there are quite a few options to block sperm, disable them, or suppress eggs and keep them out of reach.
Open Cloze
Here's what has to happen for pregnancy to occur after sexual intercourse. Sperm must swim up the vagina, through the cervical _______, upwards through the ______, and into one of the two fallopian tubes. If an egg, released during that month's _________, is in the tube, one sperm has a chance to fertilize it. ______________ are designed to prevent this process, and they work in three basic ways. They block the _____, disable sperm before they _____ the uterus, or suppress ovulation. Block is the ________. Male and ______ condoms prevent sperm from ______ into contact with the vaginal _____. That barrier is also why they, unlike other _____________ methods, are able to prevent transmission of certain sexually transmitted diseases. Meanwhile, the _________, cervical cap, and sponge work by being placed over the cervix, barricading the entrance to the uterus. These contraceptives are sometimes called barrier methods and can be used with spermicides, an example of the second category, _______. A spermicide is a chemical that immobilizes and destroys sperm. Today's spermicides come as foam, cream, jelly, _____________, and even a thin piece of translucent film that dissolves in the vagina. These products can be inserted directly into the ______ before intercourse, or can be combined with block methods, like a diaphragm or condom, for added proection. The third category for preventing _________ works by suppressing the action of an egg ________ in the ovary. If there isn't an egg available in the _________ tube, there's nothing for sperm to fertilize. Hormonal contraceptives, including the pill, the _____, the Depo shot, and the vaginal ring all release synthetic versions of various combinations of progesterone and estrogen. This hormone cocktail __________ ovulation, keeping the ________ egg safely sequestered in the ovary. Synthetic ____________ also has a block trick up its sleeve. It makes cervical mucus too thick and sticky for sperm to swim through ______. There are other contraceptives that use multiple approaches at the same time. For example, many IUDs, or intrauterine devices, contain synthetic hormones which suppress ovulation. Some also contain copper, which disable sperm while also making egg ____________ in the uterus difficult. Block, disable, or suppress: is one strategy better than the other? There are differences, but a lot of it has to do with how convenient and easy it is to use each contraceptive correctly. For example, male condoms would be about 98% effective if everyone used them perfectly. That 98% means if 100 couples correctly used condoms for a year, two women would get pregnant. But not everyone uses them correctly, so they're only 82% effective in ________. Other methods, like the patch and pill, are 99% effective when they're used _________. But in practice, that's 91%. Spermicide is only 85% effective, even with perfect usage, and just 71% effective with typical _____. Another important consideration in the choice of contraceptives are side effects, which almost exclusively affect women rather than men. Hormonal methods in particular can cause symptoms like headaches, nausea, and high blood pressure, but they vary from woman to woman. That's why these _______ require a prescription from a ______. The ______ of contraceptive method is a personal one, and what works best for you now may change later. __________ also ________ to research new methods, such as a male pill that would _______ sperm production. In the meantime, there are quite a few options to block sperm, disable them, or suppress eggs and keep them out of reach.
Solution
- prevent
- space
- continue
- implantation
- contraceptives
- immature
- perfectly
- practice
- scientists
- choice
- contraceptive
- suppositories
- opening
- diaphragm
- progesterone
- sperm
- patch
- methods
- easily
- simplest
- fallopian
- usage
- uterus
- coming
- reach
- pregnancy
- suppresses
- vagina
- disable
- ovulation
- female
- doctor
- maturing
Original Text
Here's what has to happen for pregnancy to occur after sexual intercourse. Sperm must swim up the vagina, through the cervical opening, upwards through the uterus, and into one of the two fallopian tubes. If an egg, released during that month's ovulation, is in the tube, one sperm has a chance to fertilize it. Contraceptives are designed to prevent this process, and they work in three basic ways. They block the sperm, disable sperm before they reach the uterus, or suppress ovulation. Block is the simplest. Male and female condoms prevent sperm from coming into contact with the vaginal space. That barrier is also why they, unlike other contraceptive methods, are able to prevent transmission of certain sexually transmitted diseases. Meanwhile, the diaphragm, cervical cap, and sponge work by being placed over the cervix, barricading the entrance to the uterus. These contraceptives are sometimes called barrier methods and can be used with spermicides, an example of the second category, disable. A spermicide is a chemical that immobilizes and destroys sperm. Today's spermicides come as foam, cream, jelly, suppositories, and even a thin piece of translucent film that dissolves in the vagina. These products can be inserted directly into the vagina before intercourse, or can be combined with block methods, like a diaphragm or condom, for added proection. The third category for preventing pregnancy works by suppressing the action of an egg maturing in the ovary. If there isn't an egg available in the fallopian tube, there's nothing for sperm to fertilize. Hormonal contraceptives, including the pill, the patch, the Depo shot, and the vaginal ring all release synthetic versions of various combinations of progesterone and estrogen. This hormone cocktail suppresses ovulation, keeping the immature egg safely sequestered in the ovary. Synthetic progesterone also has a block trick up its sleeve. It makes cervical mucus too thick and sticky for sperm to swim through easily. There are other contraceptives that use multiple approaches at the same time. For example, many IUDs, or intrauterine devices, contain synthetic hormones which suppress ovulation. Some also contain copper, which disable sperm while also making egg implantation in the uterus difficult. Block, disable, or suppress: is one strategy better than the other? There are differences, but a lot of it has to do with how convenient and easy it is to use each contraceptive correctly. For example, male condoms would be about 98% effective if everyone used them perfectly. That 98% means if 100 couples correctly used condoms for a year, two women would get pregnant. But not everyone uses them correctly, so they're only 82% effective in practice. Other methods, like the patch and pill, are 99% effective when they're used perfectly. But in practice, that's 91%. Spermicide is only 85% effective, even with perfect usage, and just 71% effective with typical usage. Another important consideration in the choice of contraceptives are side effects, which almost exclusively affect women rather than men. Hormonal methods in particular can cause symptoms like headaches, nausea, and high blood pressure, but they vary from woman to woman. That's why these methods require a prescription from a doctor. The choice of contraceptive method is a personal one, and what works best for you now may change later. Scientists also continue to research new methods, such as a male pill that would prevent sperm production. In the meantime, there are quite a few options to block sperm, disable them, or suppress eggs and keep them out of reach.
Frequently Occurring Word Combinations
ngrams of length 2
collocation |
frequency |
disable sperm |
2 |
suppress ovulation |
2 |
prevent sperm |
2 |
Important Words
- action
- added
- affect
- approaches
- barricading
- barrier
- basic
- block
- blood
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- cervical
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- film
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- headaches
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- hormonal
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- immature
- immobilizes
- implantation
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- intercourse
- intrauterine
- iuds
- jelly
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- time
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- transmission
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- uterus
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