皮肤由一层上皮组织（表皮）组成，其由一层结缔组织（真皮）和下面的皮下层支撑。 皮肤的最外层由紧密堆积在一起的扁平鳞状上皮细胞组成。 皮肤保护身体的内部结构免受损害，防止脱水，作为屏障抵抗细菌，储存脂肪，并产生维生素和激素。 神经细胞或神经元是神经系统的基本单位。 神经通过神经冲动在大脑，脊髓和其他身体器官之间发送信号。 神经元由两个主要部分组成：细胞体和神经过程。 中央细胞体包含神经元的细胞核，相关的细胞质和细胞器。 神经过程是“指状”突出物（轴突和树突），其从细胞体延伸并且能够传导和传递信号。
英国格拉斯哥医学Assignment代写：细胞体延伸
The skin consists of a layer of epithelial tissue (skin) that is supported by a layer of connective tissue (dermis) and the underlying subcutaneous layer. The outermost layer of the skin consists of flat squamous epithelial cells that are closely packed together. The skin protects the internal structure of the body from damage, prevents dehydration, acts as a barrier against bacteria, stores fat, and produces vitamins and hormones. Nerve cells or neurons are the basic unit of the nervous system. The nerve sends signals between the brain, the spinal cord and other body organs through nerve impulses. Neurons are composed of two major components: the cell body and the neural process. The central cell body contains the nucleus of neurons, the associated cytoplasm and organelles. Neural processes are “finger” protrusions (axons and dendrites) that extend from the cell body and are capable of transmitting and transmitting signals.