epidermis

简明释义

英[ˌepɪˈdɜːmɪs]美[ˌepɪˈdɜːrmɪs]

n. 上皮，表皮

英英释义

单词用法

同义词

反义词

例句

1.Within the epidermis develops a ring of parenchyma cells, the cortex.

在表皮细胞内有一个质壁细胞环，即皮层。

2.The epidermis forms a continuous single layer of cells.

真皮是一个连续的单一细胞层。

3.Stoma (pl. stomata) One of a large number of pores in the epidermis of plants through which gaseous exchange occurs.

植物叶片表皮存在的数目众多的小孔，打开时允许气体自由出入进行交换。

4.Collenchyma a specialized type of parenchyma usually located just beneath the epidermis that functions as supporting tissue.

厚角组织：一种特殊类型的薄壁组织，通常位于表皮的下方，起支持作用。

5.The stairs seen in profile reveal their 'incompleteness' - concrete pulp contrasts with the epidermis of the wooden floor.

楼梯侧面揭示看到他们的'不完整'-混凝土纸浆与木地板的表皮对比。

6.It protects the underlying viable epidermis.

它保护下面的活性表皮。

7.Characteristic malignant cells called Paget cells are present in the epidermis.

它特有的恶性细胞称为㐽吉特细胞，存在于上皮中。

8.The outer layer of skin, known as the epidermis, provides a protective barrier against environmental damage.

皮肤的外层被称为表皮，它提供了对环境伤害的保护屏障。

9.When applying sunscreen, it is important to cover the entire epidermis to prevent sunburn.

涂抹防晒霜时，覆盖整个表皮是很重要的，以防止晒伤。

10.The epidermis contains melanocytes, which are responsible for producing melanin and giving skin its color.

在表皮中含有黑色素细胞，它们负责产生黑色素并赋予皮肤颜色。

11.In cases of severe burns, the epidermis may be damaged, necessitating medical treatment.

在严重烧伤的情况下，表皮可能会受损，需要医疗处理。

12.Moisturizers help maintain the health of the epidermis by preventing dryness.

保湿剂通过防止干燥来帮助维持表皮的健康。

作文

The human body is a remarkable structure, composed of various systems that work in harmony to maintain life. One of the most vital components of our body is the skin, which serves as the first line of defense against environmental threats. The outermost layer of the skin is known as the epidermis, which plays a crucial role in protecting our bodies from harmful elements. The epidermis (表皮) is made up of several layers of cells, primarily keratinocytes, which produce keratin, a protein that helps to waterproof and protect the skin. The epidermis (表皮) is not just a simple barrier; it is also involved in various important functions. For instance, it helps in regulating body temperature through the process of sweating. When the body becomes too hot, sweat glands in the epidermis (表皮) release sweat, which evaporates and cools the skin. Additionally, the epidermis (表皮) contains melanocytes, which are responsible for producing melanin, the pigment that gives our skin its color and protects it from ultraviolet (UV) radiation. Another fascinating aspect of the epidermis (表皮) is its ability to regenerate. The cells in the epidermis (表皮) are constantly shed and replaced, which allows for healing and renewal. This regeneration process is particularly important when we experience cuts or abrasions. The rapid turnover of cells ensures that our skin remains healthy and intact. However, factors such as aging, sun exposure, and certain skin conditions can affect the health of the epidermis (表皮). Moreover, the epidermis (表皮) acts as a sensory organ, containing nerve endings that allow us to feel sensations such as touch, heat, and pain. This sensory function is essential for our survival, as it helps us respond to potential dangers in our environment. For example, if we accidentally touch something hot, the nerve endings in the epidermis (表皮) send signals to our brain, prompting us to withdraw our hand quickly. In conclusion, the epidermis (表皮) is a vital part of our body that serves multiple functions beyond mere protection. It plays a key role in temperature regulation, pigmentation, regeneration, and sensation. Understanding the importance of the epidermis (表皮) can help us appreciate the complexity of our skin and encourage us to take better care of it. By protecting our epidermis (表皮) from excessive sun exposure, maintaining proper hydration, and using suitable skincare products, we can ensure that this essential layer of our skin remains healthy and functional for years to come.

人体是一个非凡的结构，由各种系统组成，这些系统和谐地协同工作以维持生命。我们身体中最重要的组成部分之一是皮肤，它作为抵御环境威胁的第一道防线。皮肤的最外层被称为epidermis（表皮），它在保护我们身体免受有害元素方面发挥着至关重要的作用。epidermis（表皮）由几层细胞组成，主要是角质形成细胞，这些细胞产生角蛋白，这是一种帮助防水和保护皮肤的蛋白质。 epidermis（表皮）不仅仅是一个简单的屏障；它还参与多种重要功能。例如，它通过出汗过程帮助调节体温。当身体变得过热时，epidermis（表皮）中的汗腺释放汗水，汗水蒸发并冷却皮肤。此外，epidermis（表皮）中含有黑色素细胞，负责产生黑色素，这种色素赋予我们的皮肤颜色并保护其免受紫外线（UV）辐射的伤害。 epidermis（表皮）的另一个迷人之处在于它的再生能力。epidermis（表皮）中的细胞不断被脱落和替换，这使得愈合和更新成为可能。这一再生过程在我们经历割伤或擦伤时尤为重要。细胞的快速更新确保我们的皮肤保持健康和完整。然而，衰老、阳光暴露和某些皮肤状况等因素可能会影响epidermis（表皮）的健康。 此外，epidermis（表皮）作为感官器官，含有神经末梢，使我们能够感知触觉、热量和疼痛等感觉。这种感官功能对我们的生存至关重要，因为它帮助我们对环境中的潜在危险做出反应。例如，如果我们不小心碰到热物体，epidermis（表皮）中的神经末梢会向大脑发送信号，促使我们迅速收回手。 总之，epidermis（表皮）是我们身体的重要组成部分，它不仅仅起到保护作用。它在温度调节、色素沉着、再生和感觉方面发挥着关键作用。理解epidermis（表皮）的重要性可以帮助我们欣赏皮肤的复杂性，并鼓励我们更好地照顾皮肤。通过保护我们的epidermis（表皮）免受过度阳光暴露、保持适当的水分以及使用合适的护肤产品，我们可以确保这一重要的皮肤层在未来数年内保持健康和功能。