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Ch. 5 The Integumentary System
Amerman - Human Anatomy & Physiology 2nd Edition
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822Not the one you use?Change textbook
Chapter 5, Problem 7d

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Merkel cells produce the pigment melanin.

Verified step by step guidance
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Step 1: Understand the role of Merkel cells. Merkel cells are specialized sensory cells located in the epidermis, particularly in areas of high tactile sensitivity. They are involved in detecting light touch and pressure, not in pigment production.
Step 2: Understand the role of melanin. Melanin is a pigment responsible for skin, hair, and eye color. It is produced by melanocytes, which are specialized cells found in the basal layer of the epidermis.
Step 3: Analyze the statement. The statement claims that Merkel cells produce melanin. Based on the roles of Merkel cells and melanocytes, this statement is false because Merkel cells do not produce melanin.
Step 4: Correct the false statement. The corrected statement should be: 'Melanocytes produce the pigment melanin.'
Step 5: Review the corrected statement to ensure it aligns with the functions of the respective cells and provides accurate information.

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Key Concepts

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

Merkel Cells

Merkel cells are specialized skin cells located in the epidermis, primarily associated with the sensation of touch. They are not involved in pigment production; instead, they play a role in mechanoreception, helping the skin detect pressure and texture.
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Melanin Production

Melanin is the pigment responsible for the color of skin, hair, and eyes, produced by melanocytes, which are different from Merkel cells. Melanocytes are found in the basal layer of the epidermis and are crucial for protecting the skin from UV radiation.
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True/False Statements

In evaluating statements as true or false, it is essential to understand the definitions and functions of the terms involved. A false statement can be corrected by providing accurate information, ensuring clarity and understanding of the subject matter.
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Related Practice
Textbook Question

Epidermal ridges are created by:

a. The epidermal papillae

b. Mounds of papillary dermis arranged into dermal ridges

c. Gaps between collagen bundles in the reticular layer

d. Tight binding of the reticular layer to deeper structures

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Textbook Question

What are the functions of the dermal papillae?

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Textbook Question

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

Melanocytes account for the bulk of the epidermis.

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Textbook Question

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

Dendritic cells are phagocytes of the immune system that protect the skin and deeper tissues from invasion by pathogens.

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Textbook Question

Keratinocytes in the superficial strata of the epidermis die because:

a. They are too far away from the blood supply in the dermis.

b. They are surrounded by a lipid-based substance that makes them more permeable to water.

c. They do not die.

d. No keratinocytes in the epidermis are alive.

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Textbook Question

Which of the following statements is false?

a. Thin skin lacks the stratum lucidum, whereas thick skin has all five epidermal layers.

b. Thick skin is located on the palms, the palmar surfaces of the fingers, the soles of the feet, and the plantar surface of the toes, whereas thin skin is located everywhere else.

c. Thick skin has numerous hairs, whereas thin skin lacks hairs.

d. Thin skin has a thin stratum corneum, and the other layers are thinner than what we find in thick skin.

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