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

Platelets: Hemostasis

Anatomy & Physiology

17. The Blood

Platelets: Hemostasis

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Multiple Choice

Which of the following is a normal event in the process of blood clotting?

Inhibition of thrombin formation

Platelet adhesion to the site of vascular injury

Release of heparin from endothelial cells

Dissolution of the clot by plasminogen

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Verified step by step guidance

Understand the process of blood clotting, also known as hemostasis, which involves several key steps: vascular spasm, platelet plug formation, and coagulation.

Recognize that platelet adhesion is a crucial step in the formation of a platelet plug, which is the initial response to vascular injury.

Platelets adhere to the exposed collagen fibers at the site of injury, facilitated by the von Willebrand factor, which acts as a bridge between platelets and the collagen.

Differentiate between the options given: inhibition of thrombin formation, release of heparin, and dissolution of the clot by plasminogen are not part of the initial clot formation but are involved in regulation and breakdown of the clot.

Identify that platelet adhesion to the site of vascular injury is the correct and normal event in the process of blood clotting, as it is part of the initial response to prevent blood loss.