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 hormones help maintain a relatively constant calcium concentration in the blood?

Aldosterone and cortisol

Parathyroid hormone and calcitonin

Insulin and glucagon

Thyroxine and triiodothyronine

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Verified step by step guidance

Understand the role of calcium in the body: Calcium is crucial for various physiological processes, including bone health, muscle contraction, nerve signaling, and blood clotting.

Identify the hormones involved in calcium regulation: Parathyroid hormone (PTH) and calcitonin are the primary hormones responsible for maintaining calcium homeostasis in the blood.

Explore the function of Parathyroid hormone (PTH): PTH is secreted by the parathyroid glands and increases blood calcium levels by stimulating osteoclasts to break down bone and release calcium, enhancing calcium reabsorption in the kidneys, and promoting the activation of vitamin D to increase intestinal absorption of calcium.

Examine the role of calcitonin: Calcitonin is produced by the thyroid gland and helps lower blood calcium levels by inhibiting osteoclast activity, which reduces bone resorption, and increasing calcium excretion in the kidneys.

Differentiate these hormones from others listed: Aldosterone and cortisol are involved in electrolyte balance and stress response, insulin and glucagon regulate blood glucose levels, and thyroxine and triiodothyronine are thyroid hormones that influence metabolism, none of which directly regulate blood calcium levels.