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 of the following is the primary hormone for the long-term regulation of sodium balance?

Insulin

Adrenaline

Glucagon

Aldosterone

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Verified step by step guidance

Understand the role of sodium balance in the body: Sodium is a key electrolyte that helps regulate blood pressure, blood volume, and pH balance. The body needs to maintain sodium levels within a narrow range for proper physiological function.

Identify the hormones listed and their primary functions: Insulin regulates glucose levels, adrenaline (also known as epinephrine) is involved in the fight-or-flight response, and glucagon raises blood glucose levels. Aldosterone, on the other hand, is a hormone that plays a crucial role in sodium balance.

Learn about aldosterone: Aldosterone is a steroid hormone produced by the adrenal cortex. It is part of the renin-angiotensin-aldosterone system (RAAS), which is activated when there is a decrease in blood volume or blood pressure.

Explore how aldosterone regulates sodium: Aldosterone acts on the distal tubules and collecting ducts of the nephron in the kidneys, promoting the reabsorption of sodium ions into the bloodstream while excreting potassium ions. This process helps increase blood volume and blood pressure.

Conclude why aldosterone is the primary hormone for long-term sodium regulation: By promoting sodium retention, aldosterone helps maintain blood pressure and fluid balance over the long term, distinguishing it from the other hormones listed.