Animal Tissues PDF

Animal Tissues Animal Tissues What are tissues? Animal Tissues What are tissues? Animal Tissues What IS a tissue? A TISSUE is a group of connected cells that have a similar Animal Tissues TYPES of TISSUES 1. Epithelial Tissue 2. Muscle Tissue 3. Nerve Tissue 4. Connecti...

Animal Tissues Animal Tissues What are tissues? Animal Tissues What are tissues? Animal Tissues What IS a tissue? A TISSUE is a group of connected cells that have a similar Animal Tissues TYPES of TISSUES 1. Epithelial Tissue 2. Muscle Tissue 3. Nerve Tissue 4. Connective Tissue (Cartilage, Bone, Blood, Animal Tissues Animal Tissues Epithelial tissue General functions of epithelial tissue 1. Provides a barrier between the external environment and the organ it covers. 2. Specializes to function in secretion and absorption. 3. Protects organisms from microorganisms, injury, and fluid loss. Animal Tissues Two Major type of Epithelial Tissue  Simple Epithelia- has single layer of cells.  Stratified Epithelia- has multiple tiers of cells; range from 2 to 20 or more layers of cells. Animal Tissues Epithelial Tissues (shapes) Squamo Cuboidal Columna Animal Tissues Epithelial Tissues EPITHELIAL LOCATION IN STRUCTURE FUNCTION TISSUE TYPE BODY Responsible Thin and flat for diffusion. Simple: Simple cells that are Thin structure capillaries, squamous and elliptically allows for alveoli (in stratified shaped and lie movement of lungs); squamous on basement substances stratified: skin membrane. across the cells. Animal Tissues Epithelial Tissues Animal Tissues Epithelial Tissues EPITHELIAL LOCATION IN BODY STRUCTURE FUNCTION TISSUE TYPE Serve a protective Cube-like in function against Kidney tubules structure; may bacteria and the or glands occasionally have wearing away of (regions of the Cuboidal structures certain organs by body called microvilli on lining various responsible for surface to aid structures. Also excretion). absorption. prevent water loss. Animal Tissues Epithelial Tissues Animal Tissues Epithelial Tissues EPITHELIAL TISSUE LOCATION IN BODY STRUCTURE FUNCTION TYPE Elongated cells, Main function is nuclei located at protective. the base of the cell. Prevents against Digestive tract, Cells connected by bacterial Columnar reproductive tight junctions and infection. Can organs receive their also secrete nutrients from the mucus to protect basement surface from membrane. damage. Animal Tissues Epithelial Tissues Animal Tissues CONNECTIVE tissue Connective tissue is a biological tissue that is important in supporting, connecting or separating different types of tissues and organs in the body. All connective tissue is made up of cells, fibers (such as collagen) and Animal Tissues Connective tissue General functions of connective tissue: 1. Binding of organs 7. Heat production 2. Support 8. Transport 3. Physical Protection 4. Immune protection 5. Movement Animal Tissues Fibrous Connective tissue (Components) 1. Fibroblasts- produce fibers and ground substance that form the matrix of the tissue. 2. Macrophages- are large phagocytic cells that engulf and destroy bacteria, other foreign particles, or dead cells Animal Tissues Fibrous Connective tissue (Components) 3. Tendons- attach muscles to bones 4. Ligaments- join bones together at joints. 5. Blood- it does meet the criterion of having an extensive extracellular matrix. PLASMA RBC PLATELETS WBC Animal Tissues Three types of protein fibers in Fibrous tissue 1. Collagenous Fibers- made of collagen, are tough, flexible, and resist stretching 2. Reticular Fibers- are thin collagen fibers coated with glycoprotein. 3. Elastic Fibers- are thinner than Animal Tissues Adipose Tissue Is a specialized type of loose connective tissue that stores fat in adipose cells distributed throughout the matrix. Animal Tissues BONE Bone or osseus tissue, is a hard calcified connective tissue that composes the skeleton. Animal Tissues Animal Tissues MUSCLE TISSUE Skeletal Smooth Cardiac Muscle Muscle Muscle Animal Tissues MUSCLE TISSUE Skeletal Muscle Animal Tissues Skeletal Muscle Is generally responsible for voluntary movements of the body. It is also called as “Striated muscle”. Animal Tissues MUSCLE TISSUE Smooth Muscle Animal Tissues Smooth Muscle Lacks striations and it is involutary. It is found in the walls of digestive tract, bladder, Animal Tissues MUSCLE TISSUE Cardiac Muscle Animal Tissues Cardiac Muscle It is limited to the heart. Cardiomyocytes are striated but differ from skeletal muscle in other ends. Animal Tissues Animal Tissues Nervous Tissue Is specialized for communication by means of electrical and chemical signals. It is found in brain and spinal Animal Tissues NERVOUS TISSUE Animal Tissues Animal Tissues