Epithelial tissue, or epithelium, has the following general characteristics: epithelium consists of closely packed, flattened cells that make up the inside or outside lining of body areas there is little intercellular material. In this episode of crash course anatomy & physiology, hank gives you a brief history of histology and introduces you to the different types and functions of your body's tissues table of contents. Simple squamous epithelium consists of one layer of thin, flat epithelial cells resting on a basement membrane formed of connective tissue it is found in such places as the alveoli of the lung.
Stratified or compound epithelial tissues the surface of our body and internal organs is subjected to wear , tear and injury to protect the inner tissues, the outer lining of the body and organs is covered by a specialized group of cells called epithelium. The epithelial tissue containing the mucous secreting cells along with the underlying supporting connective tissue is usually referred to as the mucous membrane or mucosa simple columnar epithelial cells are found distributed in various organs like the lining of the gall bladder, bile ducts, gastric glands, intestinal galnds, pancreatic. Structure of bone tissue there are two types of bone tissue: compact and spongy the names imply that the two types differ in density, or how tightly the tissue is packed together. This quiz and corresponding worksheet gauge your understanding of what epithelial tissue is and the different cell shapes that are found in epithelial tissue students will be tested on epithelial.
Practice lab practical on epithelial tissue in the above picture: identify the tissue indicated by the letter a what is the function of the structure indicated by the green star identify the specific structure indicated by the red star what is the function of the structure indicated by the red star. Epithelial tissue- epithelial tissue is a group of cells which are arranged in layer(s) to form external or internal covering of the body or organs complete information on the structure and functions of epithelial tissue. A single cell layer of epithelial tissue is called simple epithelial tissue, while stratified epithelial tissue is an epithelial tissue that is more than one cell layer thick. The term epithelium refers to layers of cells that line hollow organs and glands it is also those cells that make up the outer surface of the body information epithelial cells help to protect or enclose organs most produce mucus or other secretions.
Critical thinking: the structure of a tissue usually is optimized for its function describe how the structure of individual cells and tissue arrangement of the intestine lining matches its main function, to absorb nutrients. Epithelial tissue: this tissue is an upper most tissue covering all the organs or body this tissue based on need is of different types as simple epithelium, squamous epithelium, columnar epithelium etc. Epithelial tissues are widespread throughout the body they form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands they perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.
The four types of tissues are exemplified in nervous tissue, stratified squamous epithelial tissue, cardiac muscle tissue, and connective tissue in small intestine clockwise from nervous tissue, lm × 872, lm × 282, lm × 460, lm × 800. Epithelial tissue is called simple if it is one layer thick, stratified if it is multilayered the apical surface is the free surface in both cases, ie the surface toward the lumen of an enclosed tubule or duct, or. Epithelial tissue many layers of cells the flatted when the tissue is stretched look like stratified squamous epi when stretched and stratified cuboidal when relaxed. Epithelium study guide epithelial tissue comprises one of the four basic tissue typesthe others are connective tissue (support cells, immune cells, blood cells), muscle tissue (contractile cells), and nervous tissueorgans represent various combinations of these four basic tissue types, which thus comprise the entire body.
The epithelial tissue is one of the four main types of tissue structures of the human body, along with muscle tissue, nerve tissue and connective tissue tissues are cellular organizations with similar specializations in addition to the systematic structure, it is important for every physician. The structure of epithelial tissues: cells of epithelial tissues fit closely together to form membranes, or sheets of cells these sheets always have one free surface, and they are attached to a basement membrane the basement membrane is secreted partly by the epithelial cells and partly by connective tissues (epithelium and connective.
Today on crash course anatomy & physiology, hank breaks down the parts and functions of one of your body's unsung heroes: your epithelial tissue table of contents: epithelial tissue creates inner. Relate the structure of each tissue type to their function discuss the embryonic origin of tissue identify the three major germ layers the four types of tissue in the body are epithelial, connective, muscle, and nervous epithelial tissue is made of layers of cells that cover the surfaces of the body that come into contact with the. Cell biology @ yale learning objectives describe how different types of epithelia (simple, stratified, squamous, columnar) facilitate the performance of different functions epithelia perform a wide variety of functions and adopt different cellular arrangements and structure to accomplish these functions epithelial cells are held.