The examination and interpretation of tissue sections seen under the light microscope in a laboratory setting is an example of student-directed, independent problem solving. The proper reading of a histologic section is an acquired art that can only be developed through practice, close observation and repetition. This laboratory manual was designed as a guide for students to aid them in this endeavor. The laboratory study guide/manual was designed to be used as a supplement to any current textbook and/or atlas of Histology. Learning objectives provide the overall goals for each chapter. The narrative of the study guide explains how to systematically breakdown, examine and interpret each tissue and/or organ encountered, without regard to a given histologic slide from a specific slide collection. Thus, this systematic method can be used to examine and interpret histologic preparations from any collection or of any species. The student is encouraged to sketch, label and create a personalized atlas while using this laboratory manual as a guide. The vocabulary that should be developed and used during the laboratory can be found quickly by going to the bold face type in the appropriate segment of the text. Each chapter contains one or more tables in which key structures used in the identification of a tissue/organ are presented, offering the briefest possible summary of important histologic features. As a final short review, an appendix provides summary tables that compare and contrasts the basic differences of several structures that are somewhat similar in general architecture.
The format of Essential Human Histology departs considerably from that of the usual presentations on human tissue/organ biology. This presentation was not designed as a formal reference textbook but as a tool solely for students and is designed for rapid student learning as well as rapid review in preparation for USMLE examinations. Essential Human Histology focuses the beginning student's attention on the most important aspects of this discipline which are presented as a series of learning units. In general, the text follows the traditional and logical sequence of cells to tissues to organs, but within this sequence, the discussion on mitosis is presented immediately after the cell and discussion on meiosis just prior to a consideration of the reproductive systems. To understand human structural biology, it is essential to learn a specialized vocabulary and to assimilate a large body of facts. Learning, as distinct from memorization, depends to a great degree on repetition and reinforcement and is made easier if the material to be learned can be presented in discrete, manageable segments. The format of Essential Human Histology is designed specifically to meet these requirements and, if used properly, will enable the student to master this knowledge quickly and efficiently. Use of this Textbook: The subject matter is broken down into small learning units, each of which is introduced by a vocabulary appropriate to that unit. The vocabulary introduces the main features of the subject to be discussed and provides the basic vocabulary for that unit. As each segment is read, note the vocabulary words (identified by bold print) in the text and how they contribute to the discussion. After completing the narrative segment, return to the vocabulary words, using them as prompts to recall the details of the material just read. The vocabulary serves as a summary of the topic and provides a means for rapid review. If a vocabulary word fails to prompt a response, it and the associated text can be found quickly from the bold type in the appropriate segment. A segment entitled either Histogenesis or Organogenesis provides an introduction into the development of each tissue and/or organ and provides another means of reinforcement that contributes to an overall understanding of the tissue or organ being considered. Summaries briefly outline the structural/functional relationships and serve to draw the information together and to provide an additional review of the topic. During preparation of Essential Human Histology, three major considerations were kept in mind: (1) most curricula place considerable time constraints on the student; (2) function and structure are inextricably related; and (3) the learning process essentially is a matter of repetition and reinforcement. The narrative strives to present the vast amount of information available on this topic, in a concise and logical manner, without sacrificing the detail that is necessary for a basic understanding of human tissue and organ biology.
This volume reviews and integrates all published morphological, developmental and quantitative data concerned with the digestive system of the North American opossum, Didelphis virginiana. The review emphasizes the developmental interrelationships between the epithelial lining of the developing digestive system and its associated intrinsic and extrinsic glands. Pre and postnatal developmental events for the entire digestive system are discussed and presented unter seven separate headings: oral cavity, esophagus, stomach, small intestine, colon, pancreas and liver.
This work is a brief review of the pre- and postnatal development in the North American opossum (Didelphis virginiana) presented in two volumes. Volume I summarizes gametes and fertilization, blastocyst formationan and early organogenesis, fetal membranes and placentation, parturition and migration to the pouch, general postnatal growth and development, and histogenesis/organogenesis of the integument, musculoskeletal system, cardiovascular system, blood and blood forming organs, lymphatic organs, nervous system, eye, and ear. Volume II summarizes the histogenesis/organogenesis of the respiratory, digestive, urinary, male and female reproductive and classical endocrine systems.