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

Introduction to the Urinary System

Anatomy & Physiology

25. The Urinary System

Introduction to the Urinary System

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Multiple Choice

Which portion of the renal tubule is located closest to the glomerulus?

Proximal convoluted tubule

Collecting duct

Loop of Henle

Distal convoluted tubule

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Verified step by step guidance

Step 1: Begin by understanding the structure of the nephron, which is the functional unit of the kidney. The nephron consists of several parts: the glomerulus, proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting duct.

Step 2: Recall the sequence of structures in the nephron. The glomerulus is the starting point where blood filtration occurs, and the filtrate enters the renal tubule.

Step 3: Identify the portion of the renal tubule that is directly connected to the glomerulus. This is the proximal convoluted tubule, which is located closest to the glomerulus and is responsible for reabsorbing nutrients, ions, and water from the filtrate.

Step 4: Compare the other options provided in the question. The loop of Henle is located further along the nephron after the proximal tubule, the distal convoluted tubule is even farther downstream, and the collecting duct is the final structure where urine is collected before leaving the kidney.

Step 5: Conclude that the proximal convoluted tubule is the correct answer because it is anatomically closest to the glomerulus and directly connected to it.