Question

7.

Mammals have a double circulatory system Blood flows between
the heart and the lungs
the heart and the rest of the body (systemic circulation),
(a) Fig. 7.1 shows a cross-section of an artery.
Fig. 7.1
Explain how the structure of an artery, as shown in Fig. 7.1. is related to its functions.

Answer 1

The artery has a thick membrane to prevent nutrients and oxygen in the blood from being lost while transported.

The blood thick membrane to help reduce the pressure the blood following in it is coming with.