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

1. Introduction to Anatomy & Physiology

What is Anatomy & Physiology?

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

What is Anatomy & Physiology?

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Multiple Choice

Osteoclasts are ______.

cells that store fat in bone marrow

cells that produce cartilage

cells that form new bone tissue

cells that break down bone tissue

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Verified step by step guidance

Step 1: Begin by understanding the role of osteoclasts in the skeletal system. Osteoclasts are specialized cells involved in bone remodeling and maintenance.

Step 2: Recall that bone tissue undergoes continuous remodeling, which involves two main types of cells: osteoblasts (which build new bone tissue) and osteoclasts (which break down old or damaged bone tissue).

Step 3: Osteoclasts perform their function by secreting enzymes and acids that dissolve the mineral matrix and collagen fibers of bone tissue, a process known as bone resorption.

Step 4: This breakdown of bone tissue by osteoclasts is essential for maintaining calcium and phosphate levels in the blood and for repairing micro-damage in bones.

Step 5: Based on this understanding, osteoclasts are correctly identified as 'cells that break down bone tissue,' which is crucial for the dynamic process of bone remodeling.