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

What is the primary driving force for filtration in the nephron?

Glomerular hydrostatic pressure

Peritubular capillary pressure

Renal tubular secretion

Osmotic pressure in the Bowman's capsule

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Verified step by step guidance

Understand the process of filtration in the nephron: Filtration occurs in the glomerulus, where blood plasma is filtered into the Bowman's capsule. This process is driven by pressure gradients.

Identify the primary driving force for filtration: The glomerular hydrostatic pressure is the force exerted by the blood within the glomerular capillaries, pushing water and solutes out of the blood and into the Bowman's capsule.

Compare the other options: Peritubular capillary pressure is involved in reabsorption, not filtration. Renal tubular secretion refers to the active transport of substances into the tubular fluid, which is unrelated to filtration. Osmotic pressure in the Bowman's capsule opposes filtration rather than driving it.

Relate the concept to physiology: Glomerular hydrostatic pressure is maintained by the blood pressure in the afferent arteriole, which is higher than the pressure in the efferent arteriole, creating the necessary gradient for filtration.

Conclude the reasoning: Based on the physiological mechanisms, the primary driving force for filtration in the nephron is glomerular hydrostatic pressure.