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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

Which network of capillaries surrounds the juxtamedullary nephrons in the kidney?

Peritubular capillaries

Hepatic portal veins

Vasa recta

Glomerular capillaries

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Verified step by step guidance

Understand the anatomy of the kidney: The kidney contains nephrons, which are the functional units responsible for filtering blood and forming urine. Juxtamedullary nephrons are a specific type of nephron located near the medulla of the kidney.

Learn about the capillary networks associated with nephrons: Nephrons are surrounded by capillary networks that facilitate exchange of substances. These include the glomerular capillaries, peritubular capillaries, and the vasa recta.

Differentiate between the capillary networks: Glomerular capillaries are involved in filtration of blood within the Bowman's capsule. Peritubular capillaries surround the proximal and distal tubules and are involved in reabsorption and secretion. The vasa recta are specialized capillaries that surround the loop of Henle in juxtamedullary nephrons and play a role in maintaining the concentration gradient in the medulla.

Focus on juxtamedullary nephrons: These nephrons have long loops of Henle that extend deep into the medulla. The vasa recta are the capillaries that specifically surround these loops, aiding in the countercurrent exchange mechanism to concentrate urine.

Conclude the identification: Based on the anatomical and physiological roles, the network of capillaries surrounding the juxtamedullary nephrons is the vasa recta.