Search over 10,000 free study notes

To expand the lungs and fill them with air, thoracic pressure decreases. This is done by the diaphragm contracting and flattening out and the external intercostal muscles raising the ribcage upwards and o...

Unlike mammals fish have water as their gas exchange medium instead of air. Fish use gills for gas exchange, gills are specialised flaps of tissue which have the following features to allow efficient gas ...

• basic anatomy of the heart: chambers, valves, structural difference between right and left side of the heart
  
• pulmonary vs. systemic circulation
  
• blood flow through the h...

Both mitosis and meiosis use cytokinesis for the division of genetic informaton between cells, however mitosis creates identical copies known as daughter cells after just one round of cell division, where...

Sources of finance can be grouped through type and time. ‘Types’ include internal finance and external finance whilst ‘time’ involves short, medium and long term. For internal sources of finance the busin...