Organisms are classified into two types based on the number of cells they are composed of- unicellular and multicellular. Multicellular organisms have many cells. But unlike in unicellular, where one cell performs all the functions, cells of multicellular organisms do not perform all the functions. They undergo differentiation, each cell having some specialized function to perform only. Nature has assigned some specific function to perform to the different groups of cells. These biological cells perform a similar function. There is division of labor which helps in proper and effective functioning of all life processes. This has lead to the organized group of cells having particular function called tissues. In this chapter we will study tissues found in animal and plants and their various functions
[...] CONNECTIVE TISSUES The connective tissues bind all the tissues present in the body together. They support the body by providing skeletal system or by forming packing around organs so that organs remain in their place. They connect muscle to muscle, bone to bone or bone to muscle. There are three basic components of the connective tissues: connective tissues cells, fibres and the intercellular medium. There is large intercellular space which is known as ground or matrix. This matrix is homogeneous and gel like and forms bulk of the connective tissues. [...]
[...] 4).Fluid connective tissues This connective tissue connects one body part to another through fluid medium. It acts as a medium of transportation of certain material from one body part to another. The matrix in Fluid connective tissues remains in the liquid form and lack fibres. The cells of cannot divide themselves. There are two basic components of Fluid connective tissues. 4.a). Blood Structure and nature: the blood is Fluid connective tissues which move throughout the body in veins and arteries. [...]
[...] Function : The RBCs are responsible for the transportation of oxygen in the blood from the lungs to all the cells and tissues of the body. They regulate the acid-base balance of the blood. It thus helps in preventing changes in pH. Erythrocytes also assist when a blood clot is formed. 4.a.ii) White blood cells(WBCs) or leucocytes Structure and nature: They are irregular in shape, slightly translucent and nearly colorless. Leucocytes are larger than red blood corpuscles and have a definite nucleus and are capable of changing shape. [...]
[...] Nerves cells present in the body have al together different function from the epithelial tissues which have protective function. All these tissues help our body to function properly and meet all the requirements. Animal tissues can further be classified as: ANIMAL TISSUES Epithelial Tissues Muscular tissues Connective tissues Nervous tissues Striated Unstriated Cardiac Squamous Cuboidal Cilated Columnar &Glandular Areolar Adipose Skeletal Fluid Cartilage Bone Tendon Ligament Blood Lymph Let us start our discussion with Epithelial tissues. EPITHELIAL TISSUE Epithelial tissue is simplest tissue and has protective function. [...]
[...] Skeletal tissues these are supportive tissues those form endoskelton in vertebrate. They are of two types. Cartilage and bone. 3.a). Cartilage Structure and nature: these tissues are less vascular and compact having widely spaced cells. The matrix is solid, firm and cheese like having some elasticity. This helps cartilage to be flexible. Blood vessels are absent in the matrix. Chondrocytes produce and maintain the cartilage. The delicate network of collagen fibre and living cells chondrocytes make the matrix. The matrix has got protein and calcium salt which makes it harder. [...]
APA Style reference
For your bibliographyOnline reading
with our online readerContent validated
by our reading committee
