TISSUE FUNCTIONS
  • The human body contains more than 200 types of cells that can all be classified into four types of tissues: epithelial, connective, muscle, and nervous. 
  • Epithelial tissues act as coverings controlling the movement of materials across the surface.
  • Connective tissue integrates the various parts of the body and provides support and protection to organs.
  • Muscle tissue allows the body to move. 
  • Nervous tissues propagate information.


  • The study of the shape and arrangement of cells in tissue is called histology. All cells and tissues in the body derive from three germ layers in the embryo: 
  • Ectoderm
  • Mesoderm
  • Endoderm.
  • Different types of tissues form membranes that enclose organs, provide a friction-free interaction between organs, and keep organs together.


  • Epithelial membranes are formed from epithelial tissue attached to a layer of connective tissue. 


  • There are three types of epithelial membranes:
  • Mucous – which contain glands
  • Serous – which secrete fluid
  • Cutaneous – which makes up the skin

 

Exercise Files
ESSENTIAL OILS ALTERNATIVE TO ADDITIVES (pdf)
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