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CBSE - IX
Animal Tissues
Animal Tissues
Types of Animal Tissues include epithelial tissue, connective tissue, muscular tissue and nervous tissue.Epithelial tissues form a protective layer. Different types of epithelial tissues are classified based on their shape and function. Squamous epithelium are found in the organs to provide mechanical support. Columnar epithelium are found in the lining of the organs to facilitate the movement of nutrients. Glandular epithelium are found in the glands to produce secretions. Ciliated epithelium are found in the lining of the respiratory tract. Cuboidal epithelium are found in organs to provide mechanical support. Stratified epithelium are found in places of wear and tear. Connective tissue connects different organs. Different types of connective tissues are classified based on their shape and functions. Blood is a type of fluid connective tissue.
Bone is a hard porous tissue that protects the internal organs. Fibrous connective tissue pack and bind various organs. Ligaments connect two bones and tendons connect bones to the muscles. Cartilage is found at the end of long bones to give flexibility. Areolar connective tissue fills the space inside organs. Adipose tissue is found below the skin and around kidneys. Man can move because of the elasticity and flexibility of muscular tissues. Striated muscles help us move our limbs at will. Unstriated muscles are found in the iris of the eye and bronchi of the lungs. The contraction and relaxation of cardiac muscles cause heart beats. Nervous tissue transfer information from one part of the body to another. Nervous tissues have elongated cells called neurons. Neurons join end to end to form nerve fibres.
