In this article we will discuss about the structural pattern of a human tooth with the help of a suitable diagram. Histologically, a tooth contains enamel, dentine, cementum and pulp (Fig. 1.58). Enamel is epithelial in origin and encircles dentine beyond the plane of gum. It is the hardest substance found in the body. Chemically, it has calcium phosphate in [...]
According to shape and layer of cells, epithelial tissue which are present in human body is divided in two main types: 1. Simple Epithelial Tissue 2. Compound Epithelial Tissue. Type # 1. Simple Epithelium Tissue: I. Pavement (Squamous) (Fig. 1.20A): Description: It is composed of a single layer of large flat cells placed on a thin basement membrane. Distribution: It [...]
In this article we will discuss about:- 1. Distribution of Skeletal Muscle 2. Origin and Development of Skeletal Muscle 3. Features 4. Histological Structure 5. Blood Vessels, Lymphatics and Nerves. Distribution of Skeletal Muscle: The skeletal (voluntary and striated) muscle fibres are multinucleated cylindrical structures having a clear display of longitudinal and cross-striations. This muscular tissue is responsible for voluntary [...]