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

26. Fluid and Electrolyte Balance, Acid Base Balance

Fluid Balance

Anatomy & Physiology

26. Fluid and Electrolyte Balance, Acid Base Balance

Fluid Balance

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Multiple Choice

Under which of the following circumstances do the kidneys help the body retain fluid?

When blood pressure is elevated

When aldosterone levels are low

When the body is in a state of overhydration

When antidiuretic hormone (ADH) levels are high

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Verified step by step guidance

Understand the role of the kidneys in fluid balance: The kidneys are responsible for filtering blood and maintaining fluid and electrolyte balance in the body. They adjust the amount of water excreted in urine based on the body's needs.

Learn about antidiuretic hormone (ADH): ADH, also known as vasopressin, is a hormone that helps the body retain water by signaling the kidneys to reabsorb more water back into the bloodstream, reducing urine output.

Identify the conditions under which ADH levels are high: ADH levels increase in response to dehydration or low blood volume, signaling the kidneys to conserve water to maintain homeostasis.

Analyze the given options: Evaluate each condition to determine if it would lead to increased ADH levels. Elevated blood pressure typically does not increase ADH, low aldosterone affects sodium balance rather than water directly, and overhydration would decrease ADH levels.

Conclude with the correct circumstance: High levels of ADH occur when the body needs to retain fluid, such as during dehydration or low blood volume, making 'When antidiuretic hormone (ADH) levels are high' the correct answer.