人教版教学课件[名校联盟]吉林省扶余一中高二生物《31体内受精和早期胚胎发育》课件

基因注射
胚胎切割和嵌合
将外源基因注射到受精卵或早期胚胎中， 以研究基因的功能或制备转基因动物。
将早期胚胎切割成多个部分，或将不同遗 传背景的细胞嵌合在一起，以研究胚胎发 育过程中的细胞相互作用和分化机制。
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PART 05
伦理道德问题探讨
REPORTING
人类辅助生殖技术伦理道德问题
辅助生殖技术定义
介绍人类辅助生殖技术的定义、 种类及应用范围。
伦理道德争议
探讨辅助生殖技术所涉及的伦理 道德问题，如代孕、胚胎选择等
。
法律法规限制
介绍国内外相关法律法规对辅助 生殖技术的限制和规定。
动物实验伦理道德问题
动物实验必要性
阐述动物实验在科学研究中的必要性和作用。
伦理道德争议
探讨动物实验所涉及的伦理道德问题，如动物权 利、实验痛苦等。
研究进展。
胚胎干细胞研究现状及前景
胚胎干细胞种类与功能
介绍不同种类的胚胎干细胞及其功能，如全能干细胞、多能干细 胞等。
胚胎干细胞研究进展
概述近年来胚胎干细胞研究的重要成果，如细胞培养、分化调控等 方面的突破。
临床应用前景与挑战
探讨胚胎干细胞在再生医学、疾病治疗等领域的潜在应用，以及面 临的挑战和伦理问题。
父体生活习惯
父体的不良生活习惯（如吸烟、酗 酒等）可能导致精子质量下降，进 而影响胚胎的发育。
环境因素化学物质（如农 药、重金属等）可能导致 胚胎发育异常、畸形或流 产。
物理因素
电离辐射、高温等物理因 素可能对胚胎发育产生不 良影响，导致胚胎死亡或 畸形。
生物因素
某些病毒、细菌等生物因 素可能通过感染母体或胚 胎而影响胚胎的正常发育 。

发育过 程图示
课堂互动探究
热点考向示例
随堂达标检测
活页规范训练
特别提醒 (1)受精卵是胚胎发育的起点，其全能性最高。 (2)胚胎发育初期在输卵管，以后移向子宫，并在子宫内发育成 为成熟的胎儿，直至分娩。 (3)雌、雄原核不能理解成卵子、精子原来的核，而是在原来细 胞核的基础上形成的新核，原核膜已破裂。
体型大小呈正相关吗？ 提示 不相同，动物精子的大小与动物的体型大小无关，如 大鼠的精子为190 μm，而大象的精子只有50 μm。
课堂互动探究
热点考向示例
随堂达标检测
活页规范训练
项目
精子发生
卵子发生
场所 睾丸的曲细精管 卵巢(MⅠ)和输卵管(MⅡ)
时间 区 别
初情期后
MⅠ：雌性动物排卵前后 MⅡ：精卵结合过程中完成
过程
课堂互动探究
热点考向示例
随堂达标检测
活页规范训练
①MⅠ、MⅡ连续； ①MⅠ、MⅡ不连续；
特
②需要变形；
②不需要变形；
点
区别
③细胞质均等分配 ③细胞质不均等分配
结
形成4个精子
形成一个卵细胞和3个极体
果
相同点
①原始生殖细胞的增殖为有丝分裂；②生殖细胞 的成熟过程为减数分裂；成熟过程均经一次染色 体复制和两次分裂，子细胞中染色体数目减半
②受精阶段 精子穿越放射冠和透明带 → 精子进入卵黄膜 → 原核形成 → 配子结合
课堂互动探究
热点考向示例
随堂达标检测
活页规范训练
2．胚胎发育 (1)最初发育场所：输卵管 (2)过程：
发育过程
胚胎特点
受精卵形成后即在输卵管内进行有丝分裂，开始 受精卵

In the realm of modern technology, the evolution of hightech products has been nothing short of astounding. These products have transformed the way we live, work, and interact with the world around us. Here, we will delve into a few of these remarkable advancements that have shaped our lives in recent years.Artificial Intelligence AI:AI has become an integral part of our daily lives, from virtual assistants like Siri and Alexa to complex algorithms that power search engines and social media platforms. AI systems are capable of learning, reasoning, and selfimprovement, making them invaluable in various sectors such as healthcare, finance, and transportation. Smartphones:The smartphone is arguably the most pervasive hightech product in the world today. It has revolutionized communication, allowing us to stay connected with friends, family, and colleagues across the globe. With features like highresolution cameras, GPS navigation, and a plethora of apps, smartphones have become indispensable tools for both personal and professional use.Electric and Autonomous Vehicles:The automotive industry has seen a significant shift towards electric and selfdriving vehicles. Electric cars are not only environmentally friendly but also offer improved performance and lower maintenance costs. Autonomous vehicles, on the other hand, are set to redefine transportation by reducing accidents caused by human error and optimizing traffic flow.Renewable Energy Technologies:Solar panels, wind turbines, and other renewable energy technologies have become more efficient and costeffective, leading to a surge in their adoption. These technologies are crucial in combating climate change and reducing our reliance on fossil fuels. Wearable Technology:From fitness trackers to smartwatches, wearable technology has made it easier for us to monitor our health and fitness levels. These devices can track physical activity, heart rate, sleep patterns, and even send notifications from our smartphones, making them a popular choice for healthconscious individuals.3D Printing:3D printing, also known as additive manufacturing, has opened up new possibilities in manufacturing, medicine, and even food production. It allows for the creation of complex structures and custommade products, which can be produced more quickly and at a lowercost than traditional manufacturing methods.Virtual Reality VR and Augmented Reality AR:VR and AR technologies have transformed the way we experience digital content. VR immerses users in a completely virtual environment, while AR overlays digital information onto the real world. These technologies are being used in gaming, education, and training simulations, offering immersive and interactive experiences.Blockchain Technology:Blockchain is a decentralized digital ledger that records transactions across multiple computers. It has applications beyond cryptocurrencies like Bitcoin, including secure data storage, supply chain management, and even voting systems.Drones:Drones have found uses in various fields, from aerial photography and filmmaking to delivering packages and conducting agricultural surveys. Their ability to access hardtoreach areas and perform tasks autonomously makes them a valuable tool in many industries.Robotics:Advancements in robotics have led to the development of machines that can perform tasks with a high degree of precision and efficiency. Robots are now used in manufacturing, healthcare, space exploration, and even disaster relief efforts.These hightech products are not just innovations they are the building blocks of a future where technology and human life are deeply intertwined. As technology continues to advance, we can expect even more groundbreaking products that will further enhance our lives and capabilities.。

精子细胞变为精子所发生的变化 卵泡的形成、卵子的成熟过程
哺乳动物卵子、精子
学习重点 02
的发生
5
6
思维启动 精卵发生的场所
7
思维启动 精卵发生的时间
8
精子的形成
01
精原细胞
数次有丝分裂
多个精原细胞
染色体复制
初级精母细胞
02
MⅠ
次级精母细胞
MⅡ
03
精子细胞
变形
精子
卵细胞的形成
9
第三阶段
精子细胞变成精子的过程
10
精子细胞变成精子
11
思维组合
精子细胞变形的主要变化
12
精子细胞变形成精子
A、顶体的发生
B、尾的发育
C、精子头的出现
E、精子的形成
D、细胞质浓缩
13
头 线粒体鞘
牛 猪 绵马 羊
颈
50
尾
14
卵子的发生过程
15

输卵管
卵巢
子宫
卵子发生 卵泡的形成及卵子的成熟
16
卵原细胞
初级卵母细胞
初级卵母细胞
人教版高中生物选 修3专题三31体内受 精和早期胚胎发育
共22张PPT
6家新神旬里生奇失依的独然双胚老保胞胎人留胎工着女程儿 做早新造试逝的福管女人婴儿生类儿的希诞相望下片双胞胎
2
3.1体内受精和早期胚胎发育
精子和卵子的 发生
4
简述 哺乳动物的精子和卵子的 发生过程
01 学习目标
03 学习难点
MⅠ
次级卵母细胞
+ 第一极体
MⅡ
合子
+ 第二极体
马
绵羊 牛 猪