closed circulatory systems : single or double

• what are the two types of closed circulation systems


  single or double
• what is meant by a single circulation system


  blood flows though a 2 chambered heart once per complete circuit of the body
• how many chambers are in the heart of a animal with a single circualtion system


  2
• what is meant by a double circulation system


  blood flows through a 4 chambered heart twice per complete circuit of the body
• how many chambers are in the heart of a animal with a double circualtion system


  4
• define pulmonary circulation


  blood circulation from the heart to the lungs and back
• define systemic circulation


  blood circulation from the heart to the rest of the body and back
• what type of heart does a insect have


  dorsal tube-shaped
• what type of heart does a earthworm have


  pseudoheart
• how many pseudohearts are tehre in a earthworm


  5
• what type of heart does a fish have


  2 chambered
• Do fish have a single or double circulatory system?


  single
• what type of heart does a mammal have


  4 chambered
• what are the advantages of double circualtion

  maintains a high blood pressure ,allows for a lowere pressure, rapuid circualtion and oxygenated and deoxygenated blood are kept sepparate
• in the systemic circualtion will the blood be at a high or low pressure


  high
• in pulmoary circulation will the blood be ata high or low pressure


  low
• what is the advantage of low pressure blood being maintained in thepulmonary circualtion


  prevents the build up of tissue in the lungs
• what is the advantage of high pressure blood being maintained in the systemic circualtion


  this ensures oxygen is delivered to the respiring cells
• what is the advantage of the two types of blood being kept separate to each other

  it will maintain a steep concentration gradient for oxygen and carbon dioxide in the lungs