Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

17. The Blood

Introduction To Blood

Anatomy & Physiology

17. The Blood

Introduction To Blood

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Multiple Choice

How is prothrombin activator formed in the blood coagulation process?

By the direct conversion of fibrinogen to fibrin

By the intrinsic and extrinsic pathways converging to activate factor X

By the breakdown of red blood cells

By the activation of platelets alone

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Verified step by step guidance

Understand the blood coagulation process, which involves a series of steps leading to the formation of a blood clot. This process is crucial for stopping bleeding when a blood vessel is injured.

Recognize that prothrombin activator is a key enzyme complex in the coagulation cascade. It is responsible for converting prothrombin, a plasma protein, into thrombin, an enzyme that plays a central role in clot formation.

Identify the intrinsic and extrinsic pathways of the coagulation cascade. The intrinsic pathway is initiated by damage to the blood vessel itself, while the extrinsic pathway is triggered by external trauma that causes blood to escape from the vessel.

Learn that both pathways converge at a common point, which is the activation of factor X. Factor X, once activated, combines with factor V, calcium ions, and phospholipids to form the prothrombin activator complex.

Understand that the formation of prothrombin activator is not due to the direct conversion of fibrinogen to fibrin, the breakdown of red blood cells, or the activation of platelets alone. It is specifically the result of the convergence of the intrinsic and extrinsic pathways leading to the activation of factor X.