Practise mammalian circulation, vessel and heart structure, cardiac-cycle control, haemoglobin transport and tissue-fluid exchange using images, pressure data and curves.
Ventricular septal defect (VSD) is a heart defect that people can have from birth. People with VSD have a hole in the wall (septum) that separates the left and right ventricles.
What could happen in a person with VSD?
1 Blood will leak through the hole, mostly from right to left.
2 The volume of blood circulating through the lungs will be higher than in a person without VSD.
3 Less oxygen will be delivered to the body tissues.
1, 2 and 3
1 and 2 only
1 and 3 only
2 and 3 only
Which reactions will be taking place in blood in a capillary that is next to an alveolus?
1 and 2
1 only
2 and 3
2 only
The diagram shows an anterior view of a vertical section through the human heart.
Which row shows the correct labels for the diagram?
1
2
3
4
aorta
atrioventricular valve
semilunar valve
pulmonary artery
pulmonary vein
semilunar valve
atrioventricular valve
pulmonary vein
pulmonary artery
semilunar valve
atrioventricular valve
vena cava
pulmonary vein
atrioventricular valve
semilunar valve
vena cava
When a blood vessel is damaged it can result in problems in the body.
Which row identifies the blood vessel that could have been damaged?
blood is not being distributed to organs that need it
blood is not returning to the heart and is collecting in organs
blood surges mean that relatively constant blood pressure is not maintained
elastic artery
muscular artery
vein
elastic artery
vein
muscular artery
muscular artery
elastic artery
vein
muscular artery
vein
elastic artery