ectoderm

ectoderm的音标是/i"kəʊtəʊdɜːm/，意思是外胚层。

基本翻译：外胚层。这是人体组织的一部分，主要负责形成皮肤和神经系统。

速记技巧：ecto（e）有“外”的意思，der（e）表示“层”。结合起来就是外层。ectoderm可以简写为ecto。

以上内容仅供参考，建议使用权威英语词典查证。

ectoderm的英文词源可以追溯到拉丁语中的“ex”和“tudo”，意为“外”和“皮肤”。它的变化形式包括其复数形式“ectodermes”和其过去分词形式“ectodermized”。

相关单词：

ectodermic：指外胚层的，与内胚层相对应。

ectomesoderm：指外中胚层，是早期胚胎组织的一部分。

ecto-：前缀表示外部，常用于医学术语中。

ectodermal：外胚层的，来源于其形容词形式ectodermal。它常用于描述皮肤、头发和指甲等外胚层器官。

ectodermis：外胚层组织，是一种组织类型，通常指植物的表皮和动物的皮肤。

例如，在生物学中，外胚层发育不良（ectodermal dysplasia）是一种遗传性疾病，影响皮肤、头发和指甲等外胚层组织。再如，在医学中，ectodermal cell是外胚层细胞，指的是皮肤、神经和感觉器官等组织中的细胞类型。

总之，ectoderm这个词源在生物学和医学领域都有广泛的应用，它不仅描述了外胚层的性质，也帮助我们理解了许多相关的术语和概念。

ectoderm常用短语：

1. ectoderm development 表皮发育

2. ectodermal dysplasia 表皮发育不良

3. ectodermal derivatives 表皮衍生物

4. ectodermal innervation 表皮神经支配

5. ectodermal system 表皮系统

6. ectodermal cell 表皮细胞

7. ectodermal cell differentiation 表皮细胞分化

双语例句：

1. The ectoderm of the skin is responsible for producing sweat glands and hair. (皮肤的表皮负责产生汗腺和毛发。)

2. Ectodermal dysplasias are a group of genetic disorders that affect the development of the skin and its appendages. (表皮发育不良是一组影响皮肤及其附属物发育的遗传性疾病。)

3. The ectoderm is the tissue that forms the outer layer of the nervous system. (神经系统的外层是由表皮组织形成的。)

4. The ectoderm is also responsible for producing the outer layer of the skin, which is called the stratum corneum. (表皮还负责产生皮肤的外层，称为角质层。)

5. The ectoderm is a type of tissue that is found in many different parts of the body, including the skin, hair, and nails. (表皮是一种存在于身体许多不同部位的组织类型，包括皮肤、毛发和指甲。)

6. The ectoderm is also responsible for producing sensory nerves that are responsible for feeling pain and temperature. (表皮还负责产生感觉神经，负责感觉疼痛和温度。)

7. The ectoderm is a highly specialized tissue that plays a crucial role in many aspects of human development and function. (表皮是一种高度特化的组织，在人类发育和功能的许多方面起着至关重要的作用。)

英文小作文：

The ectoderm, a type of tissue that covers the outside of the body, plays a crucial role in many aspects of human development and function. It is responsible for producing sensory nerves that are responsible for feeling pain and temperature, as well as producing the outer layer of the skin, which is called the stratum corneum. Ectoderm also forms the nervous system"s outer layer, which is responsible for controlling muscle movement and sensation throughout the body. However, ectodermal disorders can affect the development and function of this tissue, leading to various health problems and conditions. Understanding the role of the ectoderm and how it interacts with other tissues in the body is essential for understanding human development and function.