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Ch. 12 The Central Nervous System
Amerman - Human Anatomy & Physiology 2nd Edition
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822Not the one you use?Change textbook
All textbooksAmerman 2nd EditionCh. 12 The Central Nervous SystemProblem 4a
Chapter 12, Problem 4a

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.

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1
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.
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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.
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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.
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Related Practice
Textbook Question

Ms. Norris is brought to the emergency department with injuries to the posterior of her head resulting from a motor vehicle accident. Which lobes of the cerebrum likely sustained injuries? Predict the main signs and symptoms you will see resulting from the injury to these cerebral lobes.

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Textbook Question

Mark the following statements as true or false. If the statement is false, correct it to make it a true statement.

Substances can move toward or away from the cell body through the axon via fast axonal transport.

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Textbook Question

In a diving accident, Arlene damages the left side of her upper thoracic spinal cord. On which side of the body will she lose: muscle control, tactile sensation, and pain sensation? Explain.

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Textbook Question

Which statement about cerebral white matter is false?

a. Commissural fibers connect the right and left cerebral hemispheres.

b. Projection fibers connect the cerebral cortex of one hemisphere with structures in the other hemisphere.

c. The corpus callosum is the largest bundle of white matter in the brain.

d. Association fibers connect the gyri of the cerebral cortex with one another.

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Textbook Question

Mark the following statements as true or false. If the statement is false, correct it to make it a true statement.

Axons arise from the axon hillock.

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Textbook Question

Mark the following statements as true or false. If the statement is false, correct it to make it a true statement.

The axon contains a high density of ribosomes, rough endoplasmic reticulum, and Golgi apparatus.

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