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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2:21 minutes

Problem 4

Textbook Question

Water balance is regulated by control of amount(s):
a. Ingested
b. Excreted in urine
c. Lost in perspiration
d. Lost in feces

Verified step by step guidance

Understand that water balance refers to the equilibrium between water intake and water loss in the body, which is crucial for maintaining homeostasis.

Identify the sources of water intake, such as ingestion of fluids and food, and recognize that this contributes to the 'ingested' component mentioned in the problem.

Recognize the pathways of water loss, including excretion in urine, loss through perspiration (sweat), and loss in feces, as these are the mechanisms by which the body regulates water balance.

Consider how the body uses regulatory systems like the kidneys (via urine production), sweat glands (via perspiration), and the gastrointestinal system (via feces) to adjust water levels based on hydration status and environmental factors.

Relate these processes to hormonal control mechanisms, such as the role of antidiuretic hormone (ADH) in reducing water loss through urine, and how these systems work together to maintain water balance.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Water Balance

Water balance refers to the equilibrium between the intake and output of water in the body. It is crucial for maintaining homeostasis, as it affects cellular function, blood pressure, and overall health. The body regulates water balance through various mechanisms, including thirst, hormonal control, and renal function.

Fluid Intake and Excretion

Fluid intake includes all sources of water consumed, such as beverages and food, while excretion refers to the loss of water through urine, perspiration, and feces. Understanding these processes is essential for managing hydration levels and ensuring that the body maintains an appropriate water balance, especially in different environmental conditions or physical activities.

Regulatory Mechanisms

The body employs several regulatory mechanisms to maintain water balance, including hormonal signals like antidiuretic hormone (ADH) and aldosterone. These hormones influence kidney function, promoting water reabsorption or excretion based on the body's hydration status. Additionally, behavioral responses, such as thirst, play a critical role in regulating fluid intake.