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

16. The Endocrine System

Introduction to the Endocrine System

Anatomy & Physiology

16. The Endocrine System

Introduction to the Endocrine System

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Multiple Choice

Which hormone promotes an increase in the activity of osteoclasts?

Glucagon

Insulin

Calcitonin

Parathyroid hormone (PTH)

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Verified step by step guidance

Understand the role of osteoclasts: Osteoclasts are cells that break down bone tissue, a process known as bone resorption. This is important for the maintenance, repair, and remodeling of bones.

Identify the hormones involved in bone metabolism: The main hormones that regulate bone metabolism include parathyroid hormone (PTH), calcitonin, and vitamin D.

Examine the function of parathyroid hormone (PTH): PTH is secreted by the parathyroid glands and plays a crucial role in regulating calcium levels in the blood. It increases the activity of osteoclasts, leading to the release of calcium from bones into the bloodstream.

Contrast with calcitonin: Calcitonin, produced by the thyroid gland, has the opposite effect of PTH. It decreases osteoclast activity, promoting bone formation and reducing blood calcium levels.

Conclude the relationship: Since PTH increases osteoclast activity, it is the hormone that promotes an increase in the activity of osteoclasts, leading to higher calcium levels in the blood.