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 increases osteoclast activity to release more calcium ions into the bloodstream?

Parathyroid hormone (PTH)

Glucagon

Calcitonin

Insulin

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Verified step by step guidance

Understand the role of osteoclasts: Osteoclasts are cells that break down bone tissue, releasing calcium ions into the bloodstream. This process is crucial for maintaining calcium homeostasis in the body.

Identify the hormones involved in calcium regulation: The key hormones that regulate calcium levels in the blood are Parathyroid hormone (PTH), Calcitonin, and Vitamin D. Each has a distinct role in either increasing or decreasing blood calcium levels.

Examine the function of Parathyroid hormone (PTH): PTH is secreted by the parathyroid glands and is primarily responsible for increasing blood calcium levels. It does this by stimulating osteoclast activity, which breaks down bone and releases calcium into the bloodstream.

Consider the role of Calcitonin: Calcitonin is produced by the thyroid gland and works to lower blood calcium levels by inhibiting osteoclast activity, thus reducing bone resorption.

Evaluate the other options: Glucagon and Insulin are hormones involved in glucose metabolism, not directly in calcium regulation. Therefore, they do not affect osteoclast activity or calcium ion release into the bloodstream.