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

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Problem 17a

Textbook Question

Mark the following statements on the role of the brain in movement as true or false. If a statement is false, correct it to make a true statement.
The dopaminergic neurons of the substantia nigra enhance the actions of the caudate nucleus and putamen.

Verified step by step guidance

Step 1: Understand the role of the substantia nigra in movement. The substantia nigra is a part of the basal ganglia and contains dopaminergic neurons that play a critical role in modulating motor control.

Step 2: Review the function of dopaminergic neurons. Dopaminergic neurons release dopamine, which enhances the activity of the caudate nucleus and putamen, two structures within the basal ganglia involved in regulating voluntary movement.

Step 3: Analyze the statement provided. The statement claims that dopaminergic neurons of the substantia nigra enhance the actions of the caudate nucleus and putamen. This aligns with the known physiological role of dopamine in facilitating motor control.

Step 4: Determine if the statement is true or false. Based on the explanation above, the statement is true because dopaminergic neurons do enhance the actions of the caudate nucleus and putamen.

Step 5: If the statement were false, you would need to correct it by identifying the specific error and providing the accurate information. In this case, no correction is needed as the statement is accurate.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Dopaminergic Neurons

Dopaminergic neurons are nerve cells that produce and release dopamine, a neurotransmitter crucial for regulating movement, motivation, and reward. In the context of the brain's role in movement, these neurons are primarily found in the substantia nigra, a region that plays a significant role in the coordination of movement and the modulation of motor control.

Substantia Nigra

The substantia nigra is a critical structure located in the midbrain, involved in the regulation of movement. It contains dopaminergic neurons that project to other areas of the brain, including the caudate nucleus and putamen, which are part of the basal ganglia. This region is essential for initiating and controlling voluntary movements, and its dysfunction is associated with movement disorders such as Parkinson's disease.

Basal Ganglia

The basal ganglia are a group of nuclei in the brain that are involved in the control of voluntary motor movements, procedural learning, and routine behaviors. They receive input from various cortical areas and send output to the motor areas of the cortex. The caudate nucleus and putamen, which are influenced by dopaminergic neurons from the substantia nigra, play a key role in facilitating and inhibiting movements, thus ensuring smooth and coordinated motor activity.

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Mark the following statements on the role of the brain in movement as true or false. If a statement is false, correct it to make a true statement. The dopaminergic neurons of the substantia nigra enhance the actions of the caudate nucleus and putamen.

Key Concepts

Dopaminergic Neurons

Substantia Nigra

Basal Ganglia

Watch next

Mark the following statements on the role of the brain in movement as true or false. If a statement is false, correct it to make a true statement.
The dopaminergic neurons of the substantia nigra enhance the actions of the caudate nucleus and putamen.