June 26, 2021 - SuperMag

Epithelial tissue

June 26, 2021August 12, 2023 pcsclasses

Epithelial tissue The term “epithelium” was introduced by Frederic Ruysch in 1703. Epithelium tissue is made up of one or more layers of cells that are compactly arranged with a little intracellular matrix. Important features of Epithelial tissue: The Epithelial tissues line the external surfaces of organs and blood vessels throughout the body, as well as the inner surfaces of cavities in many internal organs. It is also known as covering tissue. All glands are made up of epithelial cells. Functions of epithelial cells include secretion, selective absorption, protection, Transcellular…

Classification of Animal Tissues

June 26, 2021August 4, 2023 pcsclasses

Classification of Animal Tissues Animal Tissues In multicellular animals, a group of similar cells along with intercellular substances perform a specific function. Such an organization is called tissue. The tissues arise from the undifferentiated cells of Primary Germ Layers i.e. Ectoderm, Mesoderm, and Endoderm. Features of tissues: These tissues form an organ like – the stomach, heart, and kidneys by organizing themselves in specific forms. These organs together form organ systems like the digestive system, respiratory system, etc. The study of tissues is called Histology. The English word ’tissue’ is…