Biology Practice: Circulatory System (Mock Test 3 - Advanced Processes & Mechanisms)
1. Which phase of the cardiac cycle involves the contraction of both ventricles to pump blood into the pulmonary artery and aorta?
2. The "Double Circulation" in humans consists of which two specific pathways?
3. What is the mechanism behind the formation of "Tissue Fluid" (Interstitial fluid)?
4. During blood clotting, which enzyme converts the soluble "Fibrinogen" into insoluble "Fibrin" threads?
5. Which mechanism describes the "Hepatic Portal System"?
6. The "Second Heart Sound" (Dup) is produced by the sudden closure of:
7. What is the metabolic significance of "Lymph" in the human body?
8. Which biochemical reaction occurs when Blood Platelets disintegrate at the site of injury?
9. "Joint Diastole" in the cardiac cycle refers to the period when:
10. Why is the "Left Ventricle" wall much thicker than the Right Ventricle wall?
11. Which factor triggers the conversion of Prothrombin to Thrombin in the presence of Calcium ions?
12. The "Pulse" we feel in the wrist is actually the alternate expansion and elastic recoil of an:
13. In "Pulmonary Circulation," blood moves from the ______ to the ______ and back to the heart.
14. What is the role of "Heparin" found in the blood?
15. The total time taken for one complete "Cardiac Cycle" in a normal adult is approximately:
16. Which of the following describes the anatomical sequence of an electrical impulse in the heart?
17. Blood "Serum" differs from "Plasma" because serum lacks:
18. The "Spleen" is often called the 'Graveyard of RBCs' and also acts as a reservoir of:
19. In a blood transfusion, what happens if an "Rh-negative" mother carries an "Rh-positive" fetus for the second time?
20. The "Lumen" of which vessel is the widest to allow blood to flow under low pressure with valves?
