Other questions in this quiz

2. A closed circulatory system is when ?

  • Blood is not always contained in vessels like in a haemocoel
  • Blood is always enclosed in blood vessels
  • A system in which the blood flows through the heart once per cycle

3. What is not true about a capillary ?

  • There are elastic tissue in the walls to squeeze the erythrocytes through
  • Walls made from a single row of flattened endothelium cells (Reduce diffusion distance)
  • Lumen is the same diameter as a red blood cell

4. What is not a reason that transport systems are needed?

  • SA:V - Important cells deep in the body cannot get to the oxygen as the surface area is too small
  • Breadth- Animals may have a large surface area so need more oxygen to get trough as there is too much space to fill
  • Activity- Very active animals need more nutrients and oxygen and at a higher rate
  • Size- Too big and all the nutrients would be used by the cells in the outer layers

5. Which of these steps are not found in the cardiac cycle?

  • Atrial Systole - The atria contract and push the blood in the ventricls
  • Ventricular systole- The ventricles contract and the atrio -ventricular valves close making a lub sound and the blood is pushed out of the heart
  • Complete cardiac omission -The whole heart stops movement for 0.3 seconds to rest
  • Ventricular diastole - Whole heart relaxes and semilunar valves close making the dub sound , blood flows in through vena cava and pulmonary vein


No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Human, animal and plant behaviour resources »