基础医学英语

内容简介

this book, developed from teaching experience, has several features that distinguish it from other textbooks in that a comprehensive introduction to the formation of medical terminology, and various examples and supporting exercises that are practical and helpful, are provided for both the instructor and the student.
chapter one introduces briefly the etiology of english language and that of medical english. chapter two and three provide a foundation for the formation of medical terminology. chapter four through fifteen present special medical terms related to body systems. each chapter begins with a short brief passage, acting as a platform for the entry of a certain body system, mainly the introduction to the structure and function of this body system.

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插图：The cell is enclosed in a membrane which regulates and controls the entry'and exit of substances to and from the cell. Within the nucleus are contained 23 pairs of chromo-somes, the slender threads composed of still smaller units called genes. There are 46 chromosomes（23 pairs） in all human cells, with the exception of mature sex cells, which only have half thisnumber （23）. Chromosomes and genes are composed mostly of a compound named deoxyribonu-cleic acid that is always referred to as DNA. DNA makes heredity possible and is therefore alsoreferred to as the heredity molecule. The genes are responsible for "coding" the inherited traits ofeach cell and therefore of each human being. All cells are contained in the building material calledprotoplasm, a substance that looks much like the white of an egg.A tissue is a group of similar cells working together to do a specific job. The basic types of tis-sues include : epithelial tissue located all over the body, forms the linings of internal organs, andthe outer surface of the skin covering the body. It also lines exocrine and endocrine glands. Themain functions of epithelial tissue are to protect, absorb, and secrete. Muscle tissue is composedof cells that is capable of contracting （shortening） and relaxing （lengthening）, usually producingmovement, enabling you to run, do some physical labor, blink your eyes, swallow your food——anything that involves movement. Skeletal, smooth, and. cardiac are the three types of muscletissue. The main function of muscle tissue is to contract. ~luscle cells are long and slender and arecalled fibers. The fibers decrease in length and increase in thickness during contraction of a mus-cle. Connective tissue is the most abundant and most widely distributed type of tissue. It connects,supports, penetrates, and encases kvarious body structures. There are two types of connectivetissues: solid and fluid.