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

25. The Urinary System

Renal Physiology: Overview

Anatomy & Physiology

25. The Urinary System

Renal Physiology: Overview

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Multiple Choice

At least 20-25% of the resting ______ normally flows through the kidney via the renal artery.

oxygen supply

glomerular filtrate

cardiac output

blood pressure

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Verified step by step guidance

Step 1: Understand the concept of cardiac output. Cardiac output refers to the total volume of blood pumped by the heart per minute. It is distributed to various organs, including the kidneys, which receive a significant portion of this blood flow.

Step 2: Recognize the role of the renal artery. The renal artery is responsible for delivering blood to the kidneys, which is essential for filtration and maintaining homeostasis.

Step 3: Learn the percentage of cardiac output directed to the kidneys. Approximately 20-25% of the resting cardiac output flows through the kidneys via the renal artery. This high percentage reflects the kidneys' critical role in filtering blood and regulating fluid and electrolyte balance.

Step 4: Differentiate between the terms provided in the question. 'Oxygen supply' refers to the oxygen carried by blood, 'glomerular filtrate' is the fluid filtered by the kidneys, and 'blood pressure' is the force exerted by circulating blood. None of these terms directly describe the percentage of blood flow to the kidneys.

Step 5: Conclude that the correct answer is 'cardiac output,' as it accurately describes the proportion of blood flow directed to the kidneys at rest.