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 Step 2: Tubular Reabsorption

Anatomy & Physiology

25. The Urinary System

Renal Physiology Step 2: Tubular Reabsorption

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of these substances is primarily reabsorbed from the filtrate in the proximal convoluted tubule?

Creatinine

Uric acid

Glucose

Urea

Previous problemNext problem

Verified step by step guidance

Understand the function of the proximal convoluted tubule (PCT) in the nephron: The PCT is responsible for the reabsorption of water, ions, and nutrients from the filtrate back into the bloodstream.

Identify the substances listed: Creatinine, Uric acid, Glucose, and Urea. Each of these substances has a different role and behavior in the nephron.

Recall that glucose is a vital nutrient that the body needs to retain, so it is actively reabsorbed in the PCT through specific transport mechanisms.

Recognize that creatinine is a waste product of muscle metabolism and is not reabsorbed; it is excreted in urine.

Understand that while uric acid and urea are partially reabsorbed, they are primarily waste products. Glucose, however, is almost completely reabsorbed in the PCT under normal physiological conditions.