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

3. Energy & Cell Processes

Introduction to Cell Division

Anatomy & Physiology

3. Energy & Cell Processes

Introduction to Cell Division

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Multiple Choice

Which of the following correctly lists the steps of fracture repair in sequence?

Bony callus formation, hematoma formation, fibrocartilaginous callus formation, bone remodeling

Bone remodeling, hematoma formation, bony callus formation, fibrocartilaginous callus formation

Hematoma formation, fibrocartilaginous callus formation, bony callus formation, bone remodeling

Fibrocartilaginous callus formation, hematoma formation, bone remodeling, bony callus formation

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Verified step by step guidance

Step 1: Understand the process of fracture repair, which involves the body's natural healing mechanisms to restore bone integrity after a break.

Step 2: Recognize that the first step in fracture repair is hematoma formation. This occurs immediately after the fracture, where blood vessels are damaged, leading to a clot (hematoma) that stabilizes the area and initiates the healing process.

Step 3: The second step is fibrocartilaginous callus formation. Specialized cells, such as fibroblasts and chondroblasts, create a soft callus made of cartilage and fibrous tissue to bridge the broken bone ends.

Step 4: The third step is bony callus formation. Osteoblasts replace the fibrocartilaginous callus with a hard, bony callus made of spongy bone, providing more structural support.

Step 5: The final step is bone remodeling. Osteoclasts and osteoblasts work together to reshape the bone, restoring its original structure and strength over time.