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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

Which structure serves as a bidirectional passageway for all tracts connecting the cerebrum and the spinal cord?

Brainstem

Cerebellum

Corpus callosum

Thalamus

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Verified step by step guidance

Step 1: Begin by understanding the function of the cerebrum and spinal cord. The cerebrum is the largest part of the brain responsible for higher cognitive functions, while the spinal cord serves as the main communication pathway between the brain and the rest of the body.

Step 2: Recognize that the question is asking for the structure that acts as a bidirectional passageway for all tracts connecting these two regions. This means the structure must facilitate communication both to and from the cerebrum and spinal cord.

Step 3: Evaluate the options provided: Brainstem, Cerebellum, Corpus callosum, and Thalamus. Consider the anatomical roles of each structure. For example, the corpus callosum connects the two hemispheres of the cerebrum, not the cerebrum and spinal cord.

Step 4: Focus on the brainstem. The brainstem is anatomically positioned between the cerebrum and spinal cord and contains major pathways for motor and sensory tracts. It also regulates vital functions such as breathing and heart rate.

Step 5: Conclude that the brainstem is the correct answer because it serves as the bidirectional passageway for all tracts connecting the cerebrum and spinal cord, fulfilling the criteria described in the question.