Table of contents

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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

25. The Urinary System

Renal Physiology: Overview

Anatomy & Physiology

25. The Urinary System

Renal Physiology: Overview

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Multiple Choice

Parathyroid hormone (PTH) has which of the following effects on the kidney?

Decreases water reabsorption

Decreases phosphate reabsorption

Increases calcium reabsorption

Increases sodium reabsorption

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Verified step by step guidance

Understand the role of Parathyroid Hormone (PTH): PTH is a hormone secreted by the parathyroid glands that plays a crucial role in regulating calcium levels in the blood.

Identify the primary actions of PTH on the kidneys: PTH acts on the kidneys to increase calcium reabsorption, decrease phosphate reabsorption, and convert vitamin D to its active form.

Focus on calcium reabsorption: PTH increases the reabsorption of calcium in the distal convoluted tubules of the kidneys, which helps to elevate blood calcium levels.

Consider phosphate reabsorption: PTH decreases the reabsorption of phosphate in the proximal tubules, leading to increased phosphate excretion in the urine.

Review the options given: Among the options, the effect of PTH on the kidneys that matches its known physiological role is the increase in calcium reabsorption.