Biology B (Advancing Biology) H022: The heart and monitoring heart function Topical Past Paper Questions

(a) The image shows a dissected mammalian heart. (i) Name the structures labelled G and H. G ..... [2] H ..... [2] (ii) State two safety precautions that should be taken during a heart dissection and explain why each is important. Precaution 1 ..... [2] Explanation ..... [2] Prec…

Mammalian circulatory systems contain blood vessels, such as arteries and veins. (a) State two advantages of having blood vessels in a circulatory system. 1 .....[2] (b) Fig. 24.1, on the insert, is a light micrograph of a transverse section through a mammalian vein. (i) Complete…

A rapid heart rate reduces the volume of oxygen reaching the cardiac muscle of the heart. This can lead to chest pain known as angina. Digoxin is a drug that can be used to treat angina by reducing the resting heart rate. A study into the effect of digoxin on heart rate was carri…