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

12. The Central Nervous System

Introduction to the Central Nervous System

Anatomy & Physiology

12. The Central Nervous System

Introduction to the Central Nervous System

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which part of the body is primarily controlled by the primary motor cortex of the right cerebral hemisphere?

Only the lower limbs

The right side of the body

Both sides of the body equally

The left side of the body

Previous problemNext problem

Verified step by step guidance

Understand the role of the primary motor cortex: The primary motor cortex is located in the precentral gyrus of the frontal lobe and is responsible for voluntary motor control. Each hemisphere of the brain controls the opposite side of the body due to the crossing of motor pathways.

Learn about the concept of contralateral control: The motor signals from the primary motor cortex cross over to the opposite side of the body at the level of the medulla oblongata in the brainstem. This phenomenon is known as decussation.

Identify the hemisphere in question: The problem specifies the primary motor cortex of the right cerebral hemisphere. Based on contralateral control, this hemisphere will primarily control the left side of the body.

Eliminate incorrect options: The lower limbs are not exclusively controlled by the primary motor cortex of the right hemisphere, and the right hemisphere does not control the right side of the body or both sides equally. These options can be ruled out based on the anatomy of motor control.

Conclude the correct answer: Based on the contralateral control of motor function, the primary motor cortex of the right cerebral hemisphere primarily controls the left side of the body.