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

What is the primary stimulus for parathyroid hormone release, and what is its main function?

Low blood calcium levels; it increases blood calcium by stimulating osteoclast activity.

High blood glucose levels; it increases insulin secretion.

Low blood glucose levels; it decreases blood calcium by inhibiting osteoclast activity.

High blood calcium levels; it decreases calcium absorption in the intestines.

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Verified step by step guidance

Identify the primary stimulus for parathyroid hormone (PTH) release. PTH is primarily released in response to low blood calcium levels.

Understand the main function of parathyroid hormone. PTH works to increase blood calcium levels.

Explore how PTH increases blood calcium levels. It stimulates osteoclast activity, which breaks down bone tissue and releases calcium into the bloodstream.

Consider other functions of PTH. It also increases calcium reabsorption in the kidneys and enhances the activation of vitamin D, which increases intestinal absorption of calcium.

Review the incorrect options to reinforce understanding. High blood glucose levels and low blood glucose levels are not stimuli for PTH release, and high blood calcium levels would actually inhibit PTH release.