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

The main force(s) opposing glomerular filtration is (are) __________.

glomerular hydrostatic pressure

renal plasma flow

tubular secretion

capsular hydrostatic pressure and blood colloid osmotic 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. This process occurs in the glomerulus, where blood pressure forces water and solutes through the filtration membrane.

Identify the forces involved in glomerular filtration: The forces include glomerular hydrostatic pressure (the pressure exerted by blood in the glomerular capillaries), capsular hydrostatic pressure (the pressure exerted by fluid in the Bowman's capsule), and blood colloid osmotic pressure (the pressure due to proteins in the blood that draw water back into the capillaries).

Determine which forces oppose filtration: Capsular hydrostatic pressure and blood colloid osmotic pressure are the main forces that oppose glomerular filtration. Capsular hydrostatic pressure resists the movement of fluid into the Bowman's capsule, while blood colloid osmotic pressure pulls water back into the capillaries due to the presence of plasma proteins.

Compare opposing forces to promoting forces: Glomerular hydrostatic pressure is the primary force promoting filtration, while capsular hydrostatic pressure and blood colloid osmotic pressure work against it. The balance between these forces determines the net filtration pressure.

Conclude the answer: Based on the analysis, the main forces opposing glomerular filtration are capsular hydrostatic pressure and blood colloid osmotic pressure, as they counteract the movement of fluid into the Bowman's capsule.