Anatomy & Physiology: An Integrative Approach
Anatomy & Physiology: An Integrative Approach
4th Edition
ISBN: 9781264265435
Author: Michael McKinley
Publisher: Mcgraw-hill Higher Education (us)
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Chapter 6, Problem 6DYKB
Summary Introduction

Introduction:

Melanocytes are defines as the melanin-producing cells that are found in the stratum basale layer of epidermis along with the keratinocytes. These cells produce melanin pigment on exposure to sunlight.

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Mark the following statements as true or false. If a statement is false, correct it to make a true statement.a. Melanocytes account for the bulk of the epidermis. b. Keratinocytes begin life in the stratum corneum and gradually are pushed into the stratum basale. c. Dendritic cells are phagocytes of the immune system that protect the skin and deeper tissues from invasion by pathogens. d. Merkel cells produce the pigment melanin
Mark the following statements as true or false. If a statement is false, correct it to make a true statement. a. The primary skin pigment is melanin, which is derived from the amino acid tyrosine. b. Melanin is produced by melanocytes and covers the nuclei of neighboring dendritic cells. c. Carotene is a brown-black pigment that accumulates in the stratum corneum. d. Increased amounts of blood flowing through the dermis lead to pallor in the skin. e. Hemoglobin is a pigment found in red blood cells, and its color depends on the oxygen level of the blood.
Basal cell carcinomas are the most common form of skin cancers in the United States and are frequently found on the head, neck, and arms. This cancer affects which cells? A. Langerhans cells of the stratum lucidum B. keratinocytes of the stratum spinosum C. melanocytes of the stratum basale D. basal cells of the stratum basale

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Anatomy & Physiology: An Integrative Approach

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