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

3. Energy & Cell Processes

Introduction to Metabolism

Anatomy & Physiology

3. Energy & Cell Processes

Introduction to Metabolism

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Multiple Choice

In the context of cellular respiration, what is the brain's preferred fuel source?

Amino acids

Lactate

Glucose

Fatty acids

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Verified step by step guidance

Understand the concept of cellular respiration: Cellular respiration is the process by which cells convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products. It involves glycolysis, the citric acid cycle, and oxidative phosphorylation.

Identify the primary fuel sources for the brain: The brain primarily relies on glucose as its main energy source. This is because glucose can be rapidly metabolized to provide ATP, which is crucial for maintaining neuronal function and supporting cognitive processes.

Consider alternative fuel sources: While glucose is the preferred fuel, the brain can also utilize other substrates like lactate and ketone bodies under certain conditions, such as prolonged fasting or intense exercise. However, these are not the primary sources under normal physiological conditions.

Evaluate why glucose is preferred: Glucose is favored because it can cross the blood-brain barrier efficiently and is readily available in the bloodstream. The brain's high energy demand makes glucose an ideal source due to its quick metabolism and ability to sustain continuous ATP production.

Summarize the importance of glucose: In the context of cellular respiration, glucose is the most efficient and preferred fuel source for the brain, ensuring optimal function and energy supply for neuronal activities.