Animals are made up of large numbers of components, which includes different type of cells, tissues, and organs. A group of similar cells forms a tissue, which is followed by organs and the organ system.
Animals have different levels of Organizations. Unicellular animals are made up of a single cell, and multicellular animals are made up of millions to billions of cells. Animal tissues are broadly divided into four different types and are mainly classified based on their location and functions.
- Epithelial tissue: These tissues are mainly involved in absorption, excretion, protection, reproduction, and secretion.
- Connective tissue: These tissues are mainly involved in connecting, supporting, attachments of other tissues.
- Muscular tissue: These tissues play an important role in the movement and locomotion of different parts of the body.
- Neural tissue: They are the specialized tissues which help in transmitting messages, controlling and coordination of muscles and glands through nerve impulse induction.
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