Biology 9700 · AS & A Level · The circulatory system
The circulatory system — practice question
Fig. 4.1 illustrates the way blood pressure varies in the human systemic circulation.
(a(i))[3]
Describe how blood pressure changes in Fig. 4.1.
(a(ii))[2]
Explain how the structure of veins is linked to their role in returning blood to the heart.
(b)[3]
Describe the process shown in Fig. 4.2.
(c)[3]
Explain how this drug functions as a competitive inhibitor.
Worked solution & mark scheme
This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Blood pressure falls as the distance from heart increases” …