What is tissue in the human body?
Tissue is a group of cells that have similar structure and that function together as a unit. There are four main tissue types in the body: epithelial, connective, muscle, and nervous. Each is designed for specific functions.
Where are the four types of tissue found?
There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).
What is tissue in anatomy and physiology?
Tissue, in physiology, a level of organization in multicellular organisms; it consists of a group of structurally and functionally similar cells and their intercellular material.
Which of the following is not a kind of tissue in the human body?
Explanation: Nervous tissue, connective tissue, epithelial tissue, and muscle tissue are the four major types of tissues in the human body. Skeletal tissue is a sub-type of muscle tissue rather than a primary tissue in the human body.
Is the heart a tissue?
An organ is made of several types of tissue and therefore several types of cells. For example, the heart contains muscle tissue that contracts to pump blood, fibrous tissue that makes up the heart valves, and special cells that maintain the rate and rhythm of heartbeats.
What two features do all tissues share?
What two features do all tissues share? All tissues are composed of cells in an extracellular matrix and make up organs.
What is true tissue?
true tissues; synonym: parenchyma) – isodiametric cells joined together in three dimensions, always originating from organized meristematic growth of a single cell that is capable to divide into several, isodiametric planes, thus giving off new cells into several directions.
Do jellyfish have true tissues?
The cnidarians, or the jellyfish and their kin, are the simplest animal group that displays true tissues, although they possess only two tissue layers.
What has no true tissue?
Sponges possess no true tissues. Cnidarians, such as jellyfish and sea anemones, have only two tissue layers, ectoderm and endoderm. Triploblastic animals, those possessing three tissue layers, are further classified by whether or not they have a body cavity called a coelom (pronounced “sea loam”).
Are porifera tissues true?
They are multicellular but do not have tissues or organs. The name porifera means ‘pore bearer’ in Latin. The surface of the sponge’s body is covered by a skin, one cell thick.
Do platyhelminthes have cavities?
Flatworms have no body cavity other than the gut (and the smallest free-living forms may even lack that!) and lack an anus; the same pharyngeal opening both takes in food and expels waste. Flukes, like other parasitic flatworms, have complex life cycles often involving two or more host organisms.