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level: tissues

Questions and Answers List

Question	Answer
- made up of cells - improve efficiency of operation - allow tasks to be shared amongst various specialised cells	tissues
- line the internal and external surfaces - blood vessels, ducts, gut lining - protects underlying structures from wear and tear - protect from infection and pressure - cells are very closely joined together - vary in shape depending on the tissue	epithelial tissue
- major supporting tissue of the body - tendon, bone, cartilage and ligaments - helps hold the body part together - cells are not close together - separated by each other by large amounts of materials (semi-fluid extracellular matrix) - provides support against damage, infection and heat loss	connective tissue
- long and thin (muscle fibres) - respond to stimulus by contracting and becoming shorter - skeletal muscle: muscle joined to bones, voluntary control, striated - smooth muscle: involuntary, in the walls of stomach and intestines, not striated - cardiac muscle: heart muscle, involuntary, striated, short cells	muscle tissue
- made of nerve cells called neurons - specialised in transmitting electro-chemical impulse - found in the brain, spinal cord and nerves	nervous tissue