tissues connective, muscular, nervous

• Reticular connective tissue


  ∙ Delicate network of interwoven fibers∙Forms stroma (internal supporting network) of lymphoid organs
• Blood


  ∙Blood cells surrounded by fluid matrix∙Fibers are visible during clotting∙Functions as the transport vehicle for materials
• Skeletal muscle


  Can be controlled voluntarily
• Cardiac muscle


  Found only in the heart∙Function is to pump blood (involuntary)
• Smooth muscle


  Involuntary muscle found inside many internal organs of the body
• Nervous Tissue


  ∙ Neurons and nerve support cells∙ Function is to send impulses to other areas of the body
• Irritability (Excitability)


  The ability of the cell to receive and respond to a stimulus
• Conductivity


  the ability of neurons to transmit signals from one neuron to other neurons and from a neuron to muscles and glands
• Regeneration


  replacement of destroyed tissue by the same kind of cells
• Fibrosis


  Repair by dense fibrous connective tissue (scar tissue)
• wound healing


  ~hemostasis~inflammatory~proliferative~remodeling
• Connective TissuE


  ∙ Found everywhere in the body∙ Includes the most abundant and widely distributed tissues∙ Functions∙Binds body tissues together∙Supports the body∙Provides protection
• Collagen Fibers


  very strong, comparable to iron or steel but they are very tiny. These are the thickest and strongest of the 3 fibers.(Ex. Tendons & ligaments)
• Reticular Fibers


  ∙ Thin collagen coated with glycoprotein∙ found in organs that have lots of mesh-like internal structure. (Ex. Kidneys, Spleen, lymph nodes, bone marrow)
• Elastic Fibers


  Thinner, stretch and recoil and contain a rubberlike protein called elastin. (Found in the dermis of the skin and in the periosteum)
• Hyaline cartilage


  ∙Composed of:∙Abundant collagen fibers∙Rubbery matrix
• Elastic cartilage


  ∙Provides elasticity∙Example: supports the external ear
• Fibrocartilage


  ∙Highly compressible∙Example: forms cushion-like discs between vertebrae
• Dense connective tissue


  ∙Main matrix element is collagen fibers∙Cells are fibroblasts
• Areolar connective tissue


  Main function is to hold organs in place and attaches epithelial tissue to other underlying tissues.∙ Most widely distributed connective tissue∙ Soft, pliable tissue∙ Contains all fiber types∙ Can soak up excess fluid