原肠胚的结构
![由原始的单胚层细胞发展成具有双层或三层胚层结构的胚胎,称为原肠胚](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9AC1749F8D0BD9390C67A36B86FB33451D04F8366E2304BAAC4DECAE2CDCB54E316E89C34DDBFFCD1EF9A79A1A41A5C389A58EC7ECCC56395DC047EEA107553E2F69569705050BAD7DAE4A6D299B37A02)
由原始的单胚层细胞发展成具有双层或三层胚层结构的胚胎,称为原肠胚
图片尺寸458x750![原肠胚形成 - 生物学百科](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E831C8C3962174CF48C32CE28ABB1EC72DAC700CF2184A8AC259867C6F74FB86CF11DAA50902B4FDE6703373DC48B7BD17A36DBD9D1241D67EABD4AF1E042D9D527EB24EF77E424F26B1C596A11FB863A5A)
原肠胚形成 - 生物学百科
图片尺寸440x1038![并逐渐内陷,与动物极细胞相贴,形成双层细胞结构的原肠胚,外面一层为](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E996E494D131C1C259297E31DC1DDFD1B6E8BADBA824AA52A1CF87E8E21D1D29B8D6C495A98F9F6510A11D5B6D071A315476D782138A16ADD7B5D0B6E1296E319D6756E09359AF04788B3F274C7C43D605)
并逐渐内陷,与动物极细胞相贴,形成双层细胞结构的原肠胚,外面一层为
图片尺寸874x601![原肠形始祖](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83743E0F0F5813F860CC7A692FEE2EE12FB7449EFA50296496231F313E9B61D806D49C373EAC3E5F0AE8E054DF7C520FF812A17C2D142BD38F96028588F420B6A80FC751328274B46B09DDE0436BDB15FB)
原肠形始祖
图片尺寸597x480![解析(1)图中a是桑椹胚,b是囊胚,c是原肠胚.](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E8317AA494079E51D4CDD5F9C36DEC40E12398AB434CD7859EA3B1E00CD770A99025C79C4AF59F70F0A3A91890156604A54022BB32296A0581265A2ACBB62982D82B2CB4F3E3EA506141C1F72EFA6037949)
解析(1)图中a是桑椹胚,b是囊胚,c是原肠胚.
图片尺寸520x207![原肠胚](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73E9CC3E7EF945572FA6C624C4BA04DD15F0EC27111D5FB5CC9BBC82E5FD2786E4105796FEB149B67D985373FDC24DA67BB13F6C02F3F5F06711F0BA55490FD024B71C911BAF091C5FA6C9AA73A2E9A4E3)
原肠胚
图片尺寸829x891![两栖类原肠形成时,预定区移到它们的最终部位](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E8307C1E441E9DBE6363BBAE3DEB986F6FAD259DEEDE865502202CD38956AA1A4E66B38A221533FF438778C6AD907D2B2C4364B5EFF3269044C0492AB7CCDE927312B6EA536DC652ECA994B105D06574343)
两栖类原肠形成时,预定区移到它们的最终部位
图片尺寸701x203![动物学复习题答案](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83AD97E7C606623E7B3C9049211FC0FEA4F4D55ECB2D2575D207597F6C61B3F3FB93FDC001F72E16C59E4D18260EC567870D7561BD6FEF8C5BD5085C42BF83EF0EB7A67713D47B18528133EFA8820EA447)
动物学复习题答案
图片尺寸547x258![原肠胚图册_百度百科](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73E49DEA853D6DD8DDE4006C84E074F627F3E935C82B00DB493723DB81C7885B94D0F7EA99D263EDD3C62ADD4574BC13FC40F5544EBB7FCEA0B4BC3D993534CB07B6223A25794532EAB56600770B4B6789)
原肠胚图册_百度百科
图片尺寸268x138![原肠胚发育分化形成内外两个胚层 为什么错?](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E914688101B7A3B0C4B212632079D27D38D8B8ACEC4F1F5085F341084A06F0455DAEDCF07B571D31948F85113756782B4F3A91A1B5CF49742EDB0E3238E2DA21BC9EA57216644956F885C9A14641271C54)
原肠胚发育分化形成内外两个胚层 为什么错?
图片尺寸596x308![原索动物文昌鱼的卵子,含卵黄较少,囊胚的构造是一层长柱形细胞哀围](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9D74C1276D962384F1A90B7307D516FA67BD22EA8EAC69F377FD728FE73B1967E2F774682C03A6026A1F6D819B6C4C793BFB9292CEBB35155F64B24A3620A62BEDC4E6865C9FEA1E6E28708C7877ECA91)
原索动物文昌鱼的卵子,含卵黄较少,囊胚的构造是一层长柱形细胞哀围
图片尺寸300x274![(五)原口动物和后口动物 动物受精卵发育到原肠胚(gastrula),所形成的](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E95687023F514B91B43D7AB4E1CD26BDB380E4499A68F528D02FE64F4D92BDAD56DCCB8505A419ED0CC26DF6A1EFDD233A824F8E70900387505BD1F7853C5D025C45F27A72AB0F469CE951F1ED948F0E1D)
(五)原口动物和后口动物 动物受精卵发育到原肠胚(gastrula),所形成的
图片尺寸1256x939![1,简述动物胚胎发育的过程,说出受精,卵裂,囊胚,原肠胚,三胚层等](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A737656E20DD64399E71430605058E390CA303FAED6DA3A9CD72174B51A353E09DBC5C568DA2A052256C3AC2AF1B94450456C57817A456C9807317A79299746EF3495039127087E06F59AC816B150603581)
1,简述动物胚胎发育的过程,说出受精,卵裂,囊胚,原肠胚,三胚层等
图片尺寸720x540![分享到: 2011-04-06 23:26 提问者采纳 (1)桑葚胚期;囊胚期;原肠胚](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9FAA68BF33CB3B46E391BB6BAB4DD1A3B1D4899D8CAB0514637389B20E7616178988EEBD8C1564F1788055D8F696D7475A68E80872812940CF9D36515939AA4C22B0BF60183D5DA7A1B86FCF3433CBBB3)
分享到: 2011-04-06 23:26 提问者采纳 (1)桑葚胚期;囊胚期;原肠胚
图片尺寸510x323![如将蝾螈胚体(供体)的胚孔背唇移植到另一个蝾螈原肠胚体(受体)的囊胚](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E833C869513CDFDA5A0EB3EDEF0196D4C163D763180187A3D3CCF283AD794CD222F4E75119C88067F2BA88B4C53B63DD068BE6D6CF5636409FC7C4D6114E71B708B2107C38C63F26E9170EE5AF96CBE8C76)
如将蝾螈胚体(供体)的胚孔背唇移植到另一个蝾螈原肠胚体(受体)的囊胚
图片尺寸1418x1551![(1)卵裂期: 受精卵 (2)囊胚期: 囊胚初期 囊胚初期 晚期囊胚 (3)原](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83101CD16740B0D093A18C507565EDF7102E05A41ADA93702D59C38EE23EB56C345C009ABF6047AE2C0902970030A4F0E5990C7C19D6B6DF458E14D2AC06A851FDD328AD9C798E2621CA4A7ADF048550D5)
(1)卵裂期: 受精卵 (2)囊胚期: 囊胚初期 囊胚初期 晚期囊胚 (3)原
图片尺寸1080x810![p>原肠作用是指 a href="#" data-lemmaid="568692">囊胚 /a>细胞有](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83F9B8164EB33BEADCEE525D207E4437802879387789F9CE246B6D75B82191370EC035E272E3E696ADE82B6B4DBDDAB6073F0DE80D03A6EAC308876011510E3A1CC7D05CBB248C083D1A29C8E000E40BA7)
p>原肠作用是指 a href="#" data-lemmaid="568692">囊胚 /a>细胞有
图片尺寸623x619![图中3是透明带,7是原肠腔](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9CEC5353D75F8FBB047427E756BDB07FB4F0FDEF1111A5FE2501E06BE8E8B18A0FD8917A586B0DEE6067E69EFC856DF9A07239818BEC176CF1BFAFC6F4FFC2E60EA0367187A14E3C83B14CD56A6337167)
图中3是透明带,7是原肠腔
图片尺寸489x224![2012届高考生物二轮练习 胚胎工程](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73CBE9B2867FB9E6502C62D1E4ED2A0A47EDF08CAAB3D5F7B5566BA16642392D31C0A2373AFEE44FFF943A6382188FA848E462D17953E3D4F6EFA20E8DF84B89B1DEB667ED56CAC8B6F76203CAB1812BBF)
2012届高考生物二轮练习 胚胎工程
图片尺寸297x226![原肠胚](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A731229AF0B4BA47F8BC876456D793EB27C3870E90DA98B6759082681DAB2CC2838D5493B91FE8FE1E062F9CDAA0C5ABC1B2AB38E968988EAD9C90DA3F6F7610A3A8541F4CE22C1B077899CF19722E8664E)
原肠胚
图片尺寸220x113