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懷胎十月的過程，十月懷胎全過程大揭秘

出處：媽媽育兒網(wǎng) 日期：2021-09-08 11:33:57 編輯：森林
生命是神奇的，一個小小的受精卵,會逐漸發(fā)育為有著復(fù)雜內(nèi)部結(jié)構(gòu)的小生命,十月懷胎的過程每一步都充滿著奇妙的變化！人們通常說“十月懷胎,一朝分娩”,并不是說孕育寶寶需要10個月的時間,這只是一個概數(shù)。醫(yī)學(xué)上的孕期約280天,也就是40周左右,是從末次月經(jīng)的第一天開始算起的。
為了便于說明,所謂的懷孕第1周,其實(shí)是處于女性的經(jīng)期周。排卵發(fā)生在月經(jīng)周期的中間,一個成熟的卵子,從卵巢中排出,開始朝著子宮出發(fā),精子和卵子結(jié)合成受精卵,受精卵再著床到子宮內(nèi)膜上生長發(fā)育,稱為受孕。下面小編將帶大家了解懷胎十月的過程。一起來了解下寶寶從受孕成功直至出生，都會經(jīng)歷哪些變化吧！
懷胎十月的過程，十月懷胎全過程大揭秘
十月懷胎全過程大揭秘
第1個月
在受精后幾小時內(nèi),受精卵開始分裂,一周后,受精卵已分裂發(fā)育成幾百個細(xì)胞,形成一個小圓球,并將自己嵌入子宮內(nèi)膜上正式開始了胚胎的發(fā)育。23天后,神經(jīng)細(xì)胞開始發(fā)育。一個月時,胚芽的身體增長為圓筒狀,頭尾彎向腹側(cè),有長尾巴,外形像海馬,此時血液循環(huán)建立,胎盤雛形也形成了。
懷胎十月的過程，十月懷胎全過程大揭秘
第2個月
胎兒的生長發(fā)育進(jìn)入分化期,腦、脊髓眼、聽覺器官、心臟、胃腸、肝臟初具規(guī)模,已經(jīng)能夠分辨出頭、身體和手足。
懷胎十月的過程，十月懷胎全過程大揭秘
第3個月
胎兒的面頰、下頜及耳郭已發(fā)育成形眼睛及手指、腳趾清晰可辨。心臟、肝臟、腎臟、輸尿管更加發(fā)達(dá),胎兒的骨骼和關(guān)節(jié)尚在發(fā)育中,而外生殖器已分化完畢,可辨認(rèn)出胎兒的性別。
懷胎十月的過程，十月懷胎全過程大揭秘
第4個月
胎兒頭部伸直,臉部已有了人的輪廓和外形,下頜骨、面頰骨、鼻梁骨等開始形成,耳郭伸長,皮膚逐漸變厚而不再透明。內(nèi)耳等聽覺器官已基本完善,對子宮外的聲音刺激開始有所反應(yīng)。
懷胎十月的過程，十月懷胎全過程大揭秘
第5個月
胎兒頭部及身體上呈現(xiàn)出薄薄的胎毛長出指甲,牙床開始形成;頭發(fā)、眉毛齊備;皮下脂肪開始沉積,但皮下血管仍清晰可見;胎兒已會吞咽羊水。如果用聽診器聽可聽到胎心音。
懷胎十月的過程，十月懷胎全過程大揭秘
第6個月
胎兒骨骼發(fā)育良好,開始吸吮手指。胎兒在羊水中姿勢自如地游泳并會用腳踢子宮,這時,如果子宮收縮或受到外力壓迫,胎兒會猛踢子宮壁,把這種信息傳遞給媽媽。
懷胎十月的過程，十月懷胎全過程大揭秘
第7個月
此時的胎兒滿面皺紋,有了明顯的頭發(fā)胎兒大腦發(fā)育已進(jìn)入一個高峰期,腦細(xì)胞迅速增殖分化,腦體積增大;由于胎兒內(nèi)耳與大腦發(fā)生聯(lián)系的神經(jīng)通路已接通,因此對聲音的分辨能力更為提高;胎兒還有了淺淺的呼吸和微弱的吸吮力。
懷胎十月的過程，十月懷胎全過程大揭秘
第8個月
胎兒指甲已長至指尖,皮膚呈淡紅色并變得光滑,皮下脂肪日漸增多。
懷胎十月的過程，十月懷胎全過程大揭秘
第9個月
胎兒生殖器官基本形成,肺和胃腸的功能已較發(fā)達(dá),具備了一定的呼吸和消化功能。
懷胎十月的過程，十月懷胎全過程大揭秘
第10個月
胎兒已足月,皮膚紅潤,皮下脂肪發(fā)育良好,額部發(fā)際清晰。胎兒的位置下移至下腹部,并且轉(zhuǎn)身,準(zhǔn)備誕生。
懷胎十月的過程，十月懷胎全過程大揭秘
以上就是懷胎十月過程的全部內(nèi)容了，每一個人都會有那么一段歷程，我們會慢慢長大，甚至因?yàn)樯顣x家人遠(yuǎn)去。我們長大之后就忘記了在媽媽肚子里的記憶：那些媽媽難受想吐、媽媽因?yàn)樽约鹤兇笮母纹⑽改I都受到影響的難受，我們甚至也忘記了即使在這么難受的時候，寶媽還會因?yàn)闉榱藢殞毢?，吃自己不愛吃的，而對部分自己喜歡的但是會影響胎兒的東西敬而遠(yuǎn)之，化妝品高跟鞋這些女性必備的神器，也都堆在一角。
懷胎十月的過程，十月懷胎全過程大揭秘
謹(jǐn)以此文致敬所有偉大的母親，也希望家人們在寶媽懷孕期間能夠給以理解與關(guān)照，每一個新生命的誕生，并不是媽媽一個人的責(zé)任，謝謝。

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