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 Heart2h 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

The Hypothalamus and Pituitary Gland

Anatomy & Physiology

16. The Endocrine System

The Hypothalamus and Pituitary Gland

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Multiple Choice

Polydipsia is excessive __________ associated with diabetes mellitus.

hunger

urine output

thirst

blood glucose levels

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Verified step by step guidance

Begin by understanding the term 'polydipsia'. It is derived from Greek, where 'poly' means 'many' or 'excessive', and 'dipsia' means 'thirst'. Therefore, polydipsia refers to excessive thirst.

Recognize that polydipsia is a common symptom associated with diabetes mellitus. Diabetes mellitus is a metabolic disorder characterized by high blood glucose levels due to insulin deficiency or resistance.

Consider the physiological mechanism: In diabetes mellitus, high blood glucose levels lead to osmotic diuresis, where excess glucose in the blood is excreted in the urine, pulling water along with it. This results in increased urine output, known as polyuria.

Understand the body's response: As the body loses more water through increased urine output, it triggers a sensation of thirst to compensate for the fluid loss, leading to polydipsia.

Conclude that polydipsia is directly related to the body's attempt to maintain fluid balance in response to the excessive urine output caused by high blood glucose levels in diabetes mellitus.