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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

12. The Central Nervous System

Introduction to the Central Nervous System

Anatomy & Physiology

12. The Central Nervous System

Introduction to the Central Nervous System

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Multiple Choice

How does the central nervous system detect oxygen and carbon dioxide levels in the blood?

Through chemoreceptors located in the medulla oblongata and carotid bodies

Through thermoreceptors in the hypothalamus

By monitoring the pH levels in the cerebrospinal fluid

Via baroreceptors in the aortic arch

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Verified step by step guidance

Understand that the central nervous system (CNS) monitors blood gases primarily through chemoreceptors, which are specialized sensory receptors that respond to chemical changes.

Identify the key locations of these chemoreceptors: the medulla oblongata in the brainstem and the carotid bodies located near the bifurcation of the carotid arteries.

Recognize that chemoreceptors in the medulla oblongata are sensitive to changes in the pH of the cerebrospinal fluid, which indirectly reflects carbon dioxide levels in the blood.

Note that the carotid bodies are sensitive to changes in the partial pressures of oxygen and carbon dioxide in the blood, as well as pH levels.

Understand that thermoreceptors and baroreceptors are not involved in detecting blood gas levels. Thermoreceptors detect temperature changes, while baroreceptors detect changes in blood pressure.