Atlas of Anatomy, Third Edition, is the highest quality anatomy atlas available today. With over 1,900 exquisitely detailed and accurate illustrations, the Atlas helps you master the details of human anatomy. Atlas - Shawn D. Mark Paperback Of Anatomy Miller, Human New Book Nielsen, - Paperback New Shawn Book Miller, Nielsen, Of - D. - Mark Anatomy Human Atlas The Radiological Examination Of The Colon Practical Diagnosis By D.j. Miller E The Radiological.
To help digest the food. Th is epithelial layer is surrounded by a vascular layer of loose connective tissue that contains the blood vessels that transport the absorbed molecules from the stomach. Smooth muscle tissue sur- rounds the two inner layers and helps toss and turn the food within the stomach and move it toward the small intestine. Th e smooth muscle tissue is covered by a slippery, thin layer of simple squamous epithelium that forms the outer surface of the stomach and allows it to move against neighboring organs while reducing the damaging friction. And just as the layers of clothing have names — undershirt, long-sleeved shirt, sweater — so also do the structural layers of an organ such as the stomach — mucosa, submucosa, muscularis, and serosa. All the tissues of the body can be organized into four basic tissue catego- ries — epithelial tissue, connective and supporting tissue, muscle tissue, and nervous tissue. Each tissue category has unique structural features that are shared by the tissues of that category.
Epithelial tissues are surface tissues that consist of numerous cells tightly packed together. Connective and supporting tissues share the common feature of hav- ing relatively few cells that are scattered within a surrounding fi brous extracellular matrix. Muscle tissue consists of elongated cells with spe- cialized protein arrangements that are designed to shorten. Nervous tis- sue cells are branching, wire-like cells with a great variety of shapes and lengths. In this chapter you will explore these four tissue categories and the specifi c tissue types that comprise each category. In the chapters that follow, the diff erent tissues will be observed in the context of the organs and organ systems they form.
Find more information about histology in Histology2 3 R E A L A N AT O M Y AtlasHistology.indd Page 3 15/03/11 3:59 PM user-F408AtlasHistology.indd Page 3 15/03/11 3:59 PM user-F408 /Users/user-F408/Desktop/MerryX-Mas/New/Users/user-F408/Desktop/MerryX-Mas/New 4 closely packed cells of the epithelial tissues and contrast them with the scattered cells and the fi brous surrounding matrix of the connective and supporting tissues. In the muscle tissue observe the long, slender specialized cells that are designed to shorten, and in the nerve tissue the branched, wire-like cells. We will explore each of the principal tissue categories in more detail on the pages that follow.
The facing pages show photomicrograph collages of the four principal tissue categories — epithelial tissue, connective and supporting tissue, muscle tissue, and nervous tissue. The photomicrographs illustrate the key structural features shared by the tissues in each category. Note the numerous Tissues Epithelial Tissues Connective and Supporting Tissues AtlasHistology.indd Page 4 15/03/11 3:59 PM user-F408AtlasHistology.indd Page 4 15/03/11 3:59 PM user-F408 /Users/user-F408/Desktop/MerryX-Mas/New/Users/user-F408/Desktop/MerryX-Mas/New 5 Muscle Tissues Nerve Tissues AtlasHistology.indd Page 5 15/03/11 3:59 PM user-F408AtlasHistology.indd Page 5 15/03/11 3:59 PM user-F408 /Users/user-F408/Desktop/MerryX-Mas/New/Users/user-F408/Desktop/MerryX-Mas/New 6 their cells and on the number of cell layers present. By combining the shape names — squamous (fl at cells), cuboidal, and columnar — with the term simple if there is a single layer of cells or the term stratifi ed if there is more than one layer of cells, almost all of the epithelial tissues can be described and named.
The photomicrographs on this page and the facing page represent the simple (single cell layer) epithelial tissues. Epithelial tissues are surface tissues that consist of numerous cells, with each cell forming membrane to membrane contact with its neighbors.