Organisation of eukaryotes

• Organism 


  A series of systems working together to form a discrete individual.
• Organ system 


  A series of organs working together to carry out a particular function.
• Organ


  A group of tissues working together to carry out a function.
• Epithelial tissues;


  Cuboidal, Squamous, Columnar.
• Squamous


  Flattened, one cell thick, found as alveolar walls.
• Columnar


  Elongated, can have cilia, found as the trachea.
• Cuboidal


  Simplest, one cell thick, found as PCT kidney.
• Muscle


  Skeletal, cardiac, smooth.
• Smooth muscle


  Spindle-shaped cells, no stripes, involuntary, found in the skin and digestive tract.
• Cardiac


  Involuntary, no nerve stimulation required, never tires, found in the heart, striated, short fibres
• Skeletal


  Attached to bones, locomotion, striated (striped), voluntary.
• Connective tissue


  Separates tissues and organs.