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 Heart2h 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

Platelets are similar to erythrocytes in that both structures do not contain a _. Platelets are similar to leukocytes in that both their primary functions involve the body.

Plasma membrane; nourishing.

Plasma membrane; protecting.

Nucleus; nourishing.

Nucleus; protecting.

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Verified step by step guidance

Understand the structure of platelets and erythrocytes: Both platelets and erythrocytes (red blood cells) are unique in that they do not contain a nucleus. This is a key structural similarity between the two.

Consider the primary function of platelets and leukocytes: Platelets are involved in blood clotting, which is a protective mechanism to prevent excessive bleeding. Leukocytes (white blood cells) are primarily involved in protecting the body against infections and foreign invaders.

Identify the correct terms to fill in the blanks based on the structural and functional similarities: The first blank should be filled with 'nucleus' because neither platelets nor erythrocytes have a nucleus. The second blank should be filled with 'protecting' because both platelets and leukocytes are involved in protective functions.

Review the options provided: The options are 'Plasma membrane; nourishing', 'Plasma membrane; protecting', 'Nucleus; nourishing', and 'Nucleus; protecting'.

Select the correct answer based on the analysis: The correct answer is 'Nucleus; protecting', as it accurately reflects the structural similarity (lack of nucleus) and functional similarity (protective role) between platelets and erythrocytes, and platelets and leukocytes, respectively.