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 Heart2h 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

The Cerebrum

Anatomy & Physiology

12. The Central Nervous System

The Cerebrum

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Multiple Choice

Which of the following body parts would you expect to have the greatest size difference between its area on the motor homunculus and its area on the sensory homunculus?

Hand.

Tongue.

Stomach.

Shoulder.

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Verified step by step guidance

Understand the concept of the motor and sensory homunculus: The motor homunculus represents the distribution of motor control in the brain, while the sensory homunculus represents the distribution of sensory input. Both are distorted representations of the human body based on the density of nerve connections.

Identify the function of each body part in terms of motor and sensory input: The hand and tongue have significant motor and sensory functions, while the stomach primarily has sensory functions related to digestion and less motor control.

Consider the size difference on the homunculi: Body parts with high sensory input but low motor control, like the stomach, will have a larger area on the sensory homunculus compared to the motor homunculus.

Compare the body parts: The hand and tongue have both high motor and sensory functions, leading to similar sizes on both homunculi. The shoulder has moderate motor and sensory functions. The stomach, however, has a significant sensory role but minimal motor control, leading to a greater size difference.

Conclude that the stomach is expected to have the greatest size difference between its area on the motor homunculus and its area on the sensory homunculus due to its primarily sensory function.