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 4a

Textbook Question

Mark the following statements as true or false. If the statement is false, correct it to make it a true statement.
Aggregates of Golgi apparatus and lysosomes form dark-staining Nissl bodies within the cell body.

Verified step by step guidance

Understand the components mentioned in the statement: The Golgi apparatus is an organelle involved in packaging and modifying proteins, while lysosomes are organelles containing digestive enzymes. Nissl bodies, on the other hand, are aggregates of rough endoplasmic reticulum (RER) and ribosomes, not Golgi apparatus and lysosomes.

Analyze the statement: The statement claims that Nissl bodies are formed by aggregates of Golgi apparatus and lysosomes. This is incorrect based on the definition of Nissl bodies.

Correct the false statement: Replace 'aggregates of Golgi apparatus and lysosomes' with 'aggregates of rough endoplasmic reticulum and ribosomes' to make the statement true.

Revised statement: 'Aggregates of rough endoplasmic reticulum and ribosomes form dark-staining Nissl bodies within the cell body.'

Conclude: The original statement is false, and the corrected version accurately describes the composition of Nissl bodies.

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Key Concepts

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

Nissl Bodies

Nissl bodies are structures found in the cell bodies of neurons, primarily composed of rough endoplasmic reticulum and ribosomes. They are responsible for synthesizing proteins and are stained by basic dyes, appearing as dark granules under a microscope. Nissl bodies are crucial for the metabolic activity of neurons and are indicative of the cell's health and functionality.

Golgi Apparatus

The Golgi apparatus is an organelle involved in modifying, sorting, and packaging proteins and lipids for secretion or delivery to other organelles. It plays a key role in the post-translational modification of proteins, which is essential for their proper function. In neurons, the Golgi apparatus is vital for the production of neurotransmitters and other molecules necessary for communication between cells.

Lysosomes

Lysosomes are membrane-bound organelles that contain digestive enzymes to break down waste materials and cellular debris. They play a critical role in cellular homeostasis by recycling components and eliminating harmful substances. In neurons, lysosomes help maintain cellular health by degrading damaged organelles and proteins, thus preventing the accumulation of toxic materials.