The Structure and Function of Skin, Third Edition is devoted to all matters pertaining to the structure and function of the skin. Drawing upon the accumulated data derived from embryology, histology, anatomy, physiology, biochemistry, and pharmacology, this book presents an overview of skin, with emphasis on human skin. Topics range from the biological functions of the dermis to the histochemical and microchemical properties of the epidermis; the effects of protein deficiency on hair growth; cutaneous innervation; nail regeneration and growth; sebaceous glands; and eccrine sweat glands. This book is organized into 12 chapters and begins with an overview of the structure and function of skin, and then discusses the epidermis and its structural features. Special consideration is given to the life cycle of epidermal cells; the properties and function of stratum corneum; and other cells in the epidermis including melanocytes, the cells of Langerhans, and Merkel cells. The chapters that follow focus on age-related changes in the dermis, cutaneous blood flow, changes in skin circulation, and the dermal nerve network. The book also considers hair growth and differentiation; the effects of malnutrition on the morphology of hair roots; and the structure and development of the nails. A chapter describing the cytochemistry and pharmacology of eccrine sweat glands concludes the book. This book is written primarily for dermatologists, whether seasoned veterans or neophytes, and will also be useful to all biologists who are interested in biomedical disciplines.
This book is the first to concentrate on the structure and function of black skin. There are some physiological and structural differences between black and white skin; an area of intense interest is that of differences in response to sunlight and other damaging agents. An understanding of response to damaging agents is central to the problems of preventing or forestalling the early effects of aging in skin (a goal that is responsible for the current expansion in dermatological research). This book provides a concise multi-disciplinary insight into the biology, physiology, and chemistry of black skin. Primary emphasis is on the nature and origin of the pigmentary color and how this is related to specific properties of black skin, such as photoprotection and low incidence of skin cancers, that are lacking in white skin. Other topics covered include dermatology and cosmetics of black skin from a practical viewpoint of skin care and current treatments of pigmentary disorders. Black Skin is accessible to a broad range of readers from graduate students to specialists in physical anthropology, skin biology, dermatology, and cosmetology, as well as medical practitioners. Explains the molecular basis of racial color differences and the chemistry of melanin Covers the biologic uniqueness of black skin, including: Lack of elastosis in young skin; Keloid formation Includes pigmentary disorders of black skin Addresses the cosmetics of black skin
With 474 beautiful and painstakingly detailed illustrations of normal human skin, this atlas is indispensable for the clinician and the resident in dermatology as well as for any physician or scientist who is fascinated by the pattern, order, and beauty of the largest human organ, the skin.
Sexual compatibility between male and female partners is in dispensable to normal and successful fertilization in mammals. Thus, the genes from males and females whose sexual behavior is characterized by awkwardness, ineptness, and miscues are elimi nated from the gene pool of the species. In human societies, this compatibility is not always evident; and the behavior that precedes and accompanies copulation and fertilization is exceed ingly complex and affected by many variables. As in most other species of animals, the entire repertoire of reproductive behavior of man is not well understood by man. When viewed, discussed, or reported, the topic is too often and most unfortunately regarded as an amalgam of emotion, mysticism, and biology. In the past, such emotion-charged approaches to the biologi cal fact of reproduction did much to obfuscate the subject; and as a result, much of the array of hormonal, neural, psychological, and social variables that control and insure the successful repro duction of the human species remains even now in Victorian ignor ance. But with the recent rash of books and scientific treatises on the subject, some progress has been made in elucidating human reproduction and associated sexual behavior. However, so entrench ed are some of our social taboos that the danger still lurks of equating social acceptance of the words with an understandin- all too lacking--of the process to which they refer.
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