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

2. Cell Chemistry & Cell Components

Introduction to Membrane Transport

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Introduction to Membrane Transport

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Multiple Choice

Substances are said to be what when they move from the tubular fluid back into the blood?

Filtered

Reabsorbed

Secreted

Excreted

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Verified step by step guidance

Step 1: Begin by understanding the key terms provided in the problem. 'Filtered' refers to substances that pass from the blood into the tubular fluid during the process of filtration in the kidneys. 'Reabsorbed' refers to substances that move from the tubular fluid back into the blood. 'Secreted' refers to substances actively transported from the blood into the tubular fluid. 'Excreted' refers to substances that are eliminated from the body in urine.

Step 2: Focus on the phrase 'move from the tubular fluid back into the blood.' This describes the process of reabsorption, where useful substances like water, glucose, and ions are reclaimed by the body from the filtrate.

Step 3: Recall the physiological process of reabsorption in the nephron. This occurs primarily in the proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting duct, where substances are transported back into the bloodstream.

Step 4: Eliminate the other options based on their definitions. 'Filtered' describes the initial movement of substances into the tubular fluid, not back into the blood. 'Secreted' involves movement into the tubular fluid, and 'Excreted' refers to substances leaving the body in urine.

Step 5: Conclude that the correct term for substances moving from the tubular fluid back into the blood is 'Reabsorbed,' as this matches the physiological process described.