Biology Practice: Circulatory System (Mock Test 3 - Advanced Processes)
1. Why is the muscular wall of the 'Left Ventricle' significantly thicker than that of the Right Ventricle?
2. In the 'Double Circulation' of humans, what is the specific purpose of Pulmonary Circulation?
3. What is the precise role of 'Platelets' when a blood vessel is injured?
4. Why do 'Veins' have valves while 'Arteries' do not?
5. 'Agglutination' of blood occurs during a transfusion if:
6. What happens during the 'Ventricular Systole' phase of the cardiac cycle?
7. The exchange of gases and nutrients occurs ONLY in capillaries because:
8. Which blood component is primarily responsible for maintaining the 'Osmotic Pressure' of blood?
9. The specific term for the 'pacemaker' of the heart that starts the electrical impulse is:
10. 'Phagocytosis' is a process where certain WBCs:
11. Why do RBCs have a 'Biconcave' shape?
12. The 'Portal Circulation' is a unique system where blood travels from:
13. What is the fate of 'Tissue Fluid' that is not reabsorbed by the capillaries?
14. Which blood vessel has the highest blood pressure?
15. The 'Hepatic Portal Vein' is rich in which of the following after a meal?
16. 'Serum' is different from 'Plasma' because it lacks:
17. Which heart valve prevents the backflow of blood from the aorta into the left ventricle?
18. Why does the heart rate increase during sudden fear (flight or fight response)?
19. In a blood report, 'Leucopenia' (low WBC count) indicates:
20. The 'Coronary Arteries' are vital because they:
