A&P Tissues
Tissue Types
Amy Chanda Morrison
Colorado Christian University
Our bodies have four different types of tissues. They are epithelial, connective, muscle and nervous. Each one has a specific job to do to keep the body in homeostasis. Patton stated “homeostasis is the relatively constant state maintained by the body” (pg.19). He also stated that “the precise and constant chemical composition of the internal environment must be maintained within very narrow limits, or sickness and death will result” (pg. 19). According to the textbook, Patton gives descriptions of the four major types of tissues. Epithelial tissue is our protector. It covers the body surface, lines body cavities, specializes in moving substances into and out of the body or particular organs, and forms many glands. The cells in this tissue are very close together, so very little matrix. Matrix is an extra-cellular material that all cells are surrounded by or embedded in. Located on the outer layer of skin and lines the respiratory, digestive, urinary, and reproductive tracts. Connective tissue supports the body and its parts, helping to connect and hold them together, transport substances through the body, and provide protection from foreign invaders. The cells in this tissue are often far apart and in comparison to the epithelial tissue they are separated by large quantities of matrix. The matrix in this tissue will often contain structural fibers. Connective tissue is located in the bones, joint cartilage, tendons, ligaments, blood and fat. Muscle tissue helps the body to move. They are adapted for contractility and produce movement by shortening or lengthening. Muscle tissue also produces most of the heat of the body. The cells are long fiber like, sometimes branched, capable of pulling loads and very little matrix. Muscle tissue is located in the heart, extremities, and trunk and in the walls of hollow organs. Nervous tissue is the most complex tissue in the body. It specializes in
Amy Chanda Morrison
Colorado Christian University
Our bodies have four different types of tissues. They are epithelial, connective, muscle and nervous. Each one has a specific job to do to keep the body in homeostasis. Patton stated “homeostasis is the relatively constant state maintained by the body” (pg.19). He also stated that “the precise and constant chemical composition of the internal environment must be maintained within very narrow limits, or sickness and death will result” (pg. 19). According to the textbook, Patton gives descriptions of the four major types of tissues. Epithelial tissue is our protector. It covers the body surface, lines body cavities, specializes in moving substances into and out of the body or particular organs, and forms many glands. The cells in this tissue are very close together, so very little matrix. Matrix is an extra-cellular material that all cells are surrounded by or embedded in. Located on the outer layer of skin and lines the respiratory, digestive, urinary, and reproductive tracts. Connective tissue supports the body and its parts, helping to connect and hold them together, transport substances through the body, and provide protection from foreign invaders. The cells in this tissue are often far apart and in comparison to the epithelial tissue they are separated by large quantities of matrix. The matrix in this tissue will often contain structural fibers. Connective tissue is located in the bones, joint cartilage, tendons, ligaments, blood and fat. Muscle tissue helps the body to move. They are adapted for contractility and produce movement by shortening or lengthening. Muscle tissue also produces most of the heat of the body. The cells are long fiber like, sometimes branched, capable of pulling loads and very little matrix. Muscle tissue is located in the heart, extremities, and trunk and in the walls of hollow organs. Nervous tissue is the most complex tissue in the body. It specializes in
References: Patton, K., Thibodeau, G. (2013). Anatomy &Physiology 8th edition. St. Louis, MO, Mosby Elsevier.