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

Blood Supply of the Kidneys

Anatomy & Physiology

25. The Urinary System

Blood Supply of the Kidneys

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Problem 3c

Textbook Question

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
c. The first capillary bed of the kidneys is the peritubular capillaries, which are fed by the afferent arteriole and drained by the efferent arteriole.

Verified step by step guidance

Step 1: Understand the anatomy of the kidney's blood supply. The kidney has a unique blood flow system involving two capillary beds: the glomerulus and the peritubular capillaries. The glomerulus is the first capillary bed, and it is fed by the afferent arteriole and drained by the efferent arteriole.

Step 2: Analyze the statement provided. It claims that the first capillary bed of the kidneys is the peritubular capillaries, which are fed by the afferent arteriole and drained by the efferent arteriole.

Step 3: Identify the error in the statement. The peritubular capillaries are not the first capillary bed; they are the second. The first capillary bed is the glomerulus. Additionally, the peritubular capillaries are fed by the efferent arteriole, not the afferent arteriole.

Step 4: Correct the false statement. The corrected statement should read: 'The first capillary bed of the kidneys is the glomerulus, which is fed by the afferent arteriole and drained by the efferent arteriole.'

Step 5: Review the corrected statement to ensure it aligns with the anatomy and physiology of the kidney's blood supply, confirming its accuracy.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Capillary Beds in the Kidneys

The kidneys contain two main capillary beds: the glomerular capillaries and the peritubular capillaries. The glomerular capillaries are the first capillary bed, where filtration of blood occurs, while the peritubular capillaries surround the renal tubules and are involved in reabsorption and secretion.

Afferent and Efferent Arterioles

Afferent arterioles supply blood to the glomeruli, where filtration takes place, while efferent arterioles carry blood away from the glomeruli. This arrangement is crucial for regulating blood pressure and filtration rate in the kidneys.

True/False Statement Correction

In evaluating statements as true or false, it is essential to understand the underlying biological processes. If a statement is false, it should be corrected by providing accurate information, ensuring clarity and understanding of the physiological concepts involved.