Connective Tissue Proper explained in a simple manner with a solved example. NEET Zoology XIand your david schwimmer on will and grace how to draw a dog using the word dog what does the question mark in a square emoji mean
The term tissue is used to describe a group of cells found together in the body. The cells within a tissue share a common embryonic origin. From the evolutionary perspective, tissues appear in more complex organisms. For example, multicellular protists, ancient eukaryotes, do not have cells organized into tissues. Although there are many types of cells in the human body, they are organized into four broad categories of tissues: epithelial, connective, muscle, and nervous. Each of these categories is characterized by specific functions that contribute to the overall health and maintenance of the body.
As may be obvious from its name, one of the major functions of connective tissue is to connect tissues and organs. Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. The matrix usually includes a large amount of extracellular material produced by the connective tissue cells that are embedded within it. The matrix plays a major role in the functioning of this tissue. The major component of the matrix is a ground substance often crisscrossed by protein fibers.
Connective tissue CT is one of the four basic types of animal tissue , along with epithelial tissue , muscle tissue , and nervous tissue. It develops from the mesoderm. Connective tissue is found in between other tissues everywhere in the body, including the nervous system. In the central nervous system , the three outer membranes the meninges that envelop the brain and spinal cord are composed of connective tissue. They support and protect the body.
The term tissue is used to describe a group of cells that are similar in structure and perform a specific function. Histology is the the field of study that involves the microscopic examination of tissue appearance, organization, and function. Tissues are organized into four broad categories based on structural and functional similarities. The primary tissue types work together to contribute to the overall health and maintenance of the human body. Thus, any disruption in the structure of a tissue can lead to injury or disease. Epithelial tissue refers to groups of cells that cover the exterior surfaces of the body, line internal cavities and passageways, and form certain glands. Connective tissue , as its name implies, binds the cells and organs of the body together.
Functions of Connective Tissues
Hartnell College calls connective tissues the most abundant and diverse types of tissues in the body. In addition to binding and supporting the body, this type of tissue stores fat, protects softer tissues, and has a non-cellular matrix with different consistencies. Areolar tissue, a type of loose connective tissue, binds organs together.
The human body is composed of just four basic kinds of tissue: nervous, muscular, epithelial, and connective tissue. Connective tissue is the most abundant, widely distributed, and varied type. It includes fibrous tissues, fat, cartilage, bone, bone marrow, and blood. As the name implies, connective tissues often bind other organs together, hold organs in place, cushion them, and fill space. Connective tissue is distinguished from the other types in that the extracellular material matrix usually occupies more space than the cells do, and the cells are relatively far apart. Fat is an exception, having cells in close contact with each other; but with large, nonliving, intracellular lipid droplets, fat contains much more nonliving material than living material. The matrix of connective tissue typically consists of fibers and a featureless ground substance.