}; var pbTabletSlots = [ A more developed form of viviparity called placental viviparity is adopted by some species of scorpions[23] and cockroaches,[24] certain genera of sharks, snakes and velvet worms. { bidder: 'sovrn', params: { tagid: '346693' }}, { bidder: 'ix', params: { siteId: '195465', size: [300, 250] }}, { bidder: 'sovrn', params: { tagid: '446381' }},

[29] In some instances, the newborn nymphs already have developing embryos inside them. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_rightslot2' }},

iasLog("exclusion label : resp"); Among the most studied of these biochemical substances are fetal hormones such as oxytocin and placental inflammatory molecules. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}, cmpApi: 'iab',

var mapping_btmslot_a = googletag.sizeMapping().addSize([746, 0], [[300, 250], 'fluid']).addSize([0, 0], [[300, 250], [320, 50], [300, 50], 'fluid']).build(); { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_HDX' }}, “Panic Attack” vs. “Anxiety Attack”: Which One Have You Had?

{ bidder: 'ix', params: { siteId: '195466', size: [728, 90] }}, { bidder: 'sovrn', params: { tagid: '705055' }}, Describe 2020 In Just One Word? googletag.pubads().collapseEmptyDivs(false); The head (or the buttocks in a breech birth) of the baby is pushed against the cervix, which gradually dilates until is fully dilated at 10 cm diameter. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776336', position: 'btf' }}, Lineage; extraction; descent; sometimes, high birth; noble extraction. At her next birth. pbjsCfg = {

{ bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }},
{ bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }},

[13] This is an adaption to keep the den clean and prevent detection of predators. Following nine months inside the mother's womb is the birth of the baby. {code: 'ad_topslot_a', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } },

The umbilical vein, umbilical arteries, ductus venosus and ductus arteriosus are not needed for life in air and in time these vessels become ligaments (embryonic remnants). { bidder: 'sovrn', params: { tagid: '346688' }},

It goes on your birth certificate.

{ bidder: 'appnexus', params: { placementId: '11654208' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776160', position: 'atf' }},

There is no reason to rejoice at the ship setting out on a journey [birth] not knowing what she may encounter on the high seas, but we should rejoice at the ship returning to port [death] safely —Amora Levi, Into the world we come like ships launch’d from the docks, and stocks, and slips, for fortune fair or fatal! This condition is especially true in the terminal phase of the stage of expulsion, when the child’s head distends and dilates the maternal tissues as it is being born. dfpSlots['houseslot_a'] = googletag.defineSlot('/2863368/houseslot', [300, 250], 'ad_houseslot_a').defineSizeMapping(mapping_houseslot_a).setTargeting('sri', '0').setTargeting('vp', 'mid').setTargeting('hp', 'right').setTargeting('ad_group', Adomik.randomAdGroup()).addService(googletag.pubads()); —.
{code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/2863368/btmslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } },

See how many words from the week of Oct 12–18, 2020 you get right! Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. 'increment': 0.5, googletag.pubads().setTargeting('ad_h', Adomik.hour); 'increment': 0.01, development of an organism or form of animal life in which body segmentation is complete before hatching. var pbjs = pbjs || {}; [7] In stage three, which begins after the birth of the baby, further contractions expel the placenta, amniotic sac, and the remaining portion of the umbilical cord usually within a few minutes. the theory that embryonic development is totally controlled by the cell’s environment. { bidder: 'appnexus', params: { placementId: '11653860' }}, [2], In the case of whales, dolphins and porpoises, the single calf is normally born tail first which minimizes the risk of drowning. iasLog("criterion : cdo_c = " + ["science_geographic_locales", "people_society_religion", "beauty_health_fitness"]); { bidder: 'openx', params: { unit: '539971079', delDomain: 'idm-d.openx.net' }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_btmslot_300x250' }},

{ bidder: 'ix', params: { siteId: '195451', size: [320, 50] }}, }); { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, As the child descends into and passes through the birth canal, the sensation of pain is often increased. Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. the science of obstetrics or midwifery. —, the bearing of offspring by producing eggs that mature within the body, with the young born alive. Thus, one can expect to learn about human zygote developing and maturing into adulthood after these tutorials.

{ bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }},

—, a substance or drug that induces or stimulates childbirth. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}, [18] In many sharks the eggs hatch in the oviduct within the mother's body and the embryos are nourished by the egg's yolk and fluids secreted by glands in the walls of the oviduct.

Increased placental and maternal production of inflammatory molecules in late pregnancy has been strongly linked to the initiation of labour. Her hobby gave birth to a successful business. It crawls through its mother's fur and makes its way into the pouch.

bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776156', position: 'atf' }}, Professor of Obstetrics and Gynecology, State University of New York Downstate Medical Center at Brooklyn.

Only the strongest have been able to survive the ordeals of birth and childhood. [12] The amniotic sac looking like a glistening grey balloon, with a puppy inside, is propelled through the vulva. { bidder: 'openx', params: { unit: '539971080', delDomain: 'idm-d.openx.net' }}, [25] The fossil of another genus was found with three embryos in the same position. a fetal abnormality, consisting of twins joined at the thorax. { bidder: 'appnexus', params: { placementId: '11654157' }}, carried on abroad, or with other countries.

“Affect” vs. “Effect”: Use The Correct Word Every Time, 10 Types Of Nouns Used In The English Language. (of a mother) to produce (a baby) from the womb.

{code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } }, { bidder: 'appnexus', params: { placementId: '19042093' }},

the condition or process of producing more than one offspring at one birth.
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birth definition biology

By October 19, 2020 No Comments


antikoncepční politika, regulace porodnosti. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, —. She may appear agitated, alternating between standing and lying down, with her tail slightly raised and her back arched.

[18] The aphid has a complex life cycle and during the summer months is able to multiply with great rapidity. The normal process of childbirth takes several hours and has three stages. userIds: [{ Birth is the act or process of bearing or bringing forth offspring,[1] also referred to in technical contexts as parturition. Terrestrial invertebrates may also produce large numbers of eggs, a few of which may avoid predation and carry on the species. Define birth. 'max': 36, A fossil from Australia's Gogo Formation, laid down in the Devonian period, 380 million years ago, was found with an embryo inside it connected by an umbilical cord to a yolk sac. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776358', position: 'atf' }}, { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_btmslot_mobile_flex' }}, But the pride of birth and blood is common to all nations, perhaps less so in England than elsewhere.

Large mammals, such as primates, cattle, horses, some antelopes, giraffes, hippopotamuses, rhinoceroses, elephants, seals, whales, dolphins, and porpoises, generally are pregnant with one offspring at a time, although they may have twin or multiple births on occasion. In these, the developing embryo is nourished by some form of placental structure. [18], Process of giving birth to one or more offspring, Canine reproduction § Gestation and litters, "Trunk Twins : Elephant Twins Born in Tarangire | Asilia Africa", "Calving Management in Dairy Herds: Timing of Intervention and Stillbirth", "Reproductive behaviour of small animals", "The development of the olfactory organs in newly hatched monotremes and neonate marsupials", "Sharks, rays and abortion: The prevalence of capture-induced parturition in elasmobranchs", "Nature News: The oldest pregnant mum: Devonian fossilized fish contains an embryo", "Intrapartum care: Care of healthy women and their babies during childbirth", https://en.wikipedia.org/w/index.php?title=Birth&oldid=983581129, Articles with unsourced statements from April 2014, Creative Commons Attribution-ShareAlike License, This page was last edited on 15 October 2020, at 01:47. With each contraction a twofold effect is produced to facilitate the dilatation, or opening, of the cervix. 'min': 3.05, —, the condition in a woman of never having given birth. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, googletag.pubads().enableSingleRequest(); { bidder: 'ix', params: { siteId: '194852', size: [300, 250] }}, } { bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }}, "sign-out": "https://dictionary.cambridge.org/us/auth/signout?rid=READER_ID" The American Heritage® Science Dictionary Poets are far rarer births that kings. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, These bearing-down efforts may double the effectiveness of the uterine contractions. googletag.pubads().setTargeting("cdo_l", "en-us"); { bidder: 'ix', params: { siteId: '195467', size: [300, 250] }}, In April 2018, approximately 8-month old elephant twins were sighted joining their mother's herd in the Tarangire National Park of Tanzania, estimated to have been born in August 2017. Labour in the bitch can be divided into 3 stages. var pbDesktopSlots = [

}; var pbTabletSlots = [ A more developed form of viviparity called placental viviparity is adopted by some species of scorpions[23] and cockroaches,[24] certain genera of sharks, snakes and velvet worms. { bidder: 'sovrn', params: { tagid: '346693' }}, { bidder: 'ix', params: { siteId: '195465', size: [300, 250] }}, { bidder: 'sovrn', params: { tagid: '446381' }},

[29] In some instances, the newborn nymphs already have developing embryos inside them. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_rightslot2' }},

iasLog("exclusion label : resp"); Among the most studied of these biochemical substances are fetal hormones such as oxytocin and placental inflammatory molecules. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}, cmpApi: 'iab',

var mapping_btmslot_a = googletag.sizeMapping().addSize([746, 0], [[300, 250], 'fluid']).addSize([0, 0], [[300, 250], [320, 50], [300, 50], 'fluid']).build(); { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_HDX' }}, “Panic Attack” vs. “Anxiety Attack”: Which One Have You Had?

{ bidder: 'ix', params: { siteId: '195466', size: [728, 90] }}, { bidder: 'sovrn', params: { tagid: '705055' }}, Describe 2020 In Just One Word? googletag.pubads().collapseEmptyDivs(false); The head (or the buttocks in a breech birth) of the baby is pushed against the cervix, which gradually dilates until is fully dilated at 10 cm diameter. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776336', position: 'btf' }}, Lineage; extraction; descent; sometimes, high birth; noble extraction. At her next birth. pbjsCfg = {

{ bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }},
{ bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }},

[13] This is an adaption to keep the den clean and prevent detection of predators. Following nine months inside the mother's womb is the birth of the baby. {code: 'ad_topslot_a', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } },

The umbilical vein, umbilical arteries, ductus venosus and ductus arteriosus are not needed for life in air and in time these vessels become ligaments (embryonic remnants). { bidder: 'sovrn', params: { tagid: '346688' }},

It goes on your birth certificate.

{ bidder: 'appnexus', params: { placementId: '11654208' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776160', position: 'atf' }},

There is no reason to rejoice at the ship setting out on a journey [birth] not knowing what she may encounter on the high seas, but we should rejoice at the ship returning to port [death] safely —Amora Levi, Into the world we come like ships launch’d from the docks, and stocks, and slips, for fortune fair or fatal! This condition is especially true in the terminal phase of the stage of expulsion, when the child’s head distends and dilates the maternal tissues as it is being born. dfpSlots['houseslot_a'] = googletag.defineSlot('/2863368/houseslot', [300, 250], 'ad_houseslot_a').defineSizeMapping(mapping_houseslot_a).setTargeting('sri', '0').setTargeting('vp', 'mid').setTargeting('hp', 'right').setTargeting('ad_group', Adomik.randomAdGroup()).addService(googletag.pubads()); —.
{code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/2863368/btmslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } },

See how many words from the week of Oct 12–18, 2020 you get right! Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. 'increment': 0.5, googletag.pubads().setTargeting('ad_h', Adomik.hour); 'increment': 0.01, development of an organism or form of animal life in which body segmentation is complete before hatching. var pbjs = pbjs || {}; [7] In stage three, which begins after the birth of the baby, further contractions expel the placenta, amniotic sac, and the remaining portion of the umbilical cord usually within a few minutes. the theory that embryonic development is totally controlled by the cell’s environment. { bidder: 'appnexus', params: { placementId: '11653860' }}, [2], In the case of whales, dolphins and porpoises, the single calf is normally born tail first which minimizes the risk of drowning. iasLog("criterion : cdo_c = " + ["science_geographic_locales", "people_society_religion", "beauty_health_fitness"]); { bidder: 'openx', params: { unit: '539971079', delDomain: 'idm-d.openx.net' }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_btmslot_300x250' }},

{ bidder: 'ix', params: { siteId: '195451', size: [320, 50] }}, }); { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, As the child descends into and passes through the birth canal, the sensation of pain is often increased. Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. the science of obstetrics or midwifery. —, the bearing of offspring by producing eggs that mature within the body, with the young born alive. Thus, one can expect to learn about human zygote developing and maturing into adulthood after these tutorials.

{ bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }},

—, a substance or drug that induces or stimulates childbirth. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}, [18] In many sharks the eggs hatch in the oviduct within the mother's body and the embryos are nourished by the egg's yolk and fluids secreted by glands in the walls of the oviduct.

Increased placental and maternal production of inflammatory molecules in late pregnancy has been strongly linked to the initiation of labour. Her hobby gave birth to a successful business. It crawls through its mother's fur and makes its way into the pouch.

bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776156', position: 'atf' }}, Professor of Obstetrics and Gynecology, State University of New York Downstate Medical Center at Brooklyn.

Only the strongest have been able to survive the ordeals of birth and childhood. [12] The amniotic sac looking like a glistening grey balloon, with a puppy inside, is propelled through the vulva. { bidder: 'openx', params: { unit: '539971080', delDomain: 'idm-d.openx.net' }}, [25] The fossil of another genus was found with three embryos in the same position. a fetal abnormality, consisting of twins joined at the thorax. { bidder: 'appnexus', params: { placementId: '11654157' }}, carried on abroad, or with other countries.

“Affect” vs. “Effect”: Use The Correct Word Every Time, 10 Types Of Nouns Used In The English Language. (of a mother) to produce (a baby) from the womb.

{code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } }, { bidder: 'appnexus', params: { placementId: '19042093' }},

the condition or process of producing more than one offspring at one birth.

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