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

Which of the following is a primary factor that directly influences the rate of glomerular filtration in the kidneys?

Renal medullary osmolarity

Ureteral peristalsis

Plasma glucose concentration

Glomerular hydrostatic pressure

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Verified step by step guidance

Understand the concept of glomerular filtration: Glomerular filtration is the process by which the kidneys filter blood, removing waste and excess substances to form urine. The rate of filtration is influenced by pressures within the glomerulus.

Identify the primary factor influencing glomerular filtration: The glomerular hydrostatic pressure is the force exerted by blood within the glomerular capillaries. This pressure drives the movement of fluid and solutes from the blood into the Bowman's capsule.

Eliminate irrelevant factors: Renal medullary osmolarity, ureteral peristalsis, and plasma glucose concentration do not directly affect the rate of glomerular filtration. These factors are involved in other kidney functions, such as urine concentration or glucose reabsorption.

Relate glomerular hydrostatic pressure to filtration rate: Higher glomerular hydrostatic pressure increases the rate of filtration, while lower pressure decreases it. This pressure is influenced by systemic blood pressure and the resistance in afferent and efferent arterioles.

Summarize the importance of glomerular hydrostatic pressure: It is the primary driving force for filtration in the kidneys, ensuring that waste products and excess substances are efficiently removed from the blood.