3.4 mass transport in animals Flashcards
Give the pathway a red blood cell takes when travelling in the human
circulatory system from a kidney to the lungs.
Do not include descriptions of pressure changes in the heart or the role of
heart valves in your answer. (3)
(b) Identify the type of blood vessel labelled M in the figure above.
Explain your answer.
Type of blood vessel
Explanation (2)
Tissue fluid is formed from blood at the arteriole end of a capillary bed.
Explain how water from tissue fluid is returned to the circulatory system. (4)
Suggest two ways the student could improve the quality of his scientific
drawing of the blood vessels in this dissection.
Identify the type of blood vessel labelled as X and the type of blood vessel
labelled as Y in Figure 1.
Describe one feature that allowed you to identify the blood vessels.
Blood vessel X _______________________________________________
Blood vessel Y _______________________________________________
Feature (2)
Describe two precautions the student should take when clearing away after
the dissection.
Explain how an arteriole can reduce the blood flow into capillaries. (2)
- ventricles and arteries? (2)
- atria and ventricles? (2)
blood vessel carrying blood at the lowest
blood pressure.
(2)
Use information from the diagram above to calculate the heart rate of this
dog.
Heart rate _______________ beats minute-1 (1)
(b) At Q on the diagram above there is a small increase in pressure and in
rate of blood flow in the aorta.
Explain how this happens and its importance. (2)
A student correctly plotted the right ventricle pressure on the same grid as
the left ventricle pressure in diagram above.
Describe one way in which the student’s curve would be similar to and one
way it would be different from the curve shown in the diagram above.
Similarity
Difference
(2)
Describe the advantage of the Bohr effect during intense exercise. (2)
