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Ch. 23 Nutrition and Metabolism
Amerman - Human Anatomy & Physiology 2nd Edition
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822Not the one you use?Change textbook
Chapter 23, Problem 22b

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
b. High-density lipoproteins deliver cholesterol from the liver to peripheral tissues.

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1
Understand the role of high-density lipoproteins (HDLs) in the body. HDLs are often referred to as 'good cholesterol' because they help transport cholesterol from peripheral tissues back to the liver for excretion or recycling.
Analyze the statement: 'High-density lipoproteins deliver cholesterol from the liver to peripheral tissues.' This description does not align with the primary function of HDLs, which is to remove cholesterol from tissues and transport it to the liver.
Determine the correct function of HDLs. HDLs are involved in reverse cholesterol transport, which is the process of moving cholesterol away from tissues and back to the liver.
Correct the false statement. The corrected statement should read: 'High-density lipoproteins transport cholesterol from peripheral tissues to the liver.'
Mark the original statement as false and provide the corrected version to ensure clarity and understanding of HDL function.

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Key Concepts

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

High-Density Lipoproteins (HDL)

High-Density Lipoproteins (HDL) are a class of lipoproteins that transport cholesterol from peripheral tissues back to the liver. They are often referred to as 'good' cholesterol because they help remove excess cholesterol from the bloodstream, reducing the risk of cardiovascular diseases.
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Cholesterol Transport

Cholesterol transport involves the movement of cholesterol within the body, primarily facilitated by lipoproteins. While HDL is responsible for reverse cholesterol transport, Low-Density Lipoproteins (LDL) are responsible for delivering cholesterol from the liver to peripheral tissues, which can contribute to plaque buildup in arteries if levels are too high.
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True/False Statements in Biology

In biology, true/false statements often require an understanding of specific processes and functions. Correcting false statements involves identifying misconceptions and providing accurate information based on established scientific knowledge, which is essential for clear communication and understanding in the field.
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