In detail, compare and contrast epithelium and connective tissue..pdf

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In detail, compare and contrast epithelium and connective tissue. Solution Answer: Epithelial tissue Connective tissue consists of three cell types; squamous, cuboidal and columnar. The tissue is two or more cells thick. found above the basement membranes. Functions to protect the body, secretions, excretions, absorption and allows the body to sense the outside world. Eg. Skin, kidney The cells in the connective tissue are scattered in the matrix. supplied with a rich network of nerves and blood capillaries lies below the basal membrane. Functions: supports, connects, binds or separates other tissues or organs. Ex. Bone, ligament Epithelial tissue Connective tissue consists of three cell types; squamous, cuboidal and columnar. The tissue is two or more cells thick. found above the basement membranes. Functions to protect the body, secretions, excretions, absorption and allows the body to sense the outside world. Eg. Skin, kidney The cells in the connective tissue are scattered in the matrix. supplied with a rich network of nerves and blood capillaries lies below the basal membrane. Functions: supports, connects, binds or separates other tissues or organs. Ex. Bone, ligament.

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. Definition of Tissues Biological tissue is a collection of interconnected cells that perform a similar function within an organism. In other words, it is a group of cells working together mainly inside an organ. 3. Classification of Tissues Human body is composed of 4 basic types of tissue: •Epithelial tissue •Connective tissue •Muscular tissue •Nervous tissue 4. Origin of Tissue A fertilized egg divides to produce 3 primary germ cell layers. These layers differentiate to form the tissues of the body. 5. Epithelial Tissue Epithelial cells cover or line all body surfaces, cavities and tubes. So, These are called covering epithelia. Epithelial cells form the functional units of secretory glands. So, These are called glandular epithelia.

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Definition : Tissue is a group of cells that have similar structure and that function together as a unit. A nonliving material, called the intercellular matrix, fills the spaces between the cells. Histology (his′-TOL-oˉ-jē; histo- = tissue; logy = study of) is the science that deals with the study of tissues. A pathologist (pa-THOL-oˉ - jist; patho- = disease) is a physician who examines cells and tissues to help other physicians make accurate diagnoses. 1. Epithelial tissue covers body surfaces and lines hollow organs, body cavities, and ducts; it also forms glands. This tissue allows the body to interact with both its internal and external environments. 2. Connective tissue protects and supports the body and its organs. Various types of connective tissues bind organs together, store energy reserves as fat, and help provide the body with immunity to disease-causing organisms. 3. Muscular tissue is composed of cells specialized for contraction and generation of force. In the process, muscular tissue generates heat that warms the body. 4. Nervous tissue detects changes in a variety of conditions inside and outside the body and responds by generating electrical signals called nerve action potentials (nerve impulses) that activate muscular contractions and glandular secretions.

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