Describe briefly the changes that occur in keratinocytes when they migrate from the stratum basale to the stratum corneum. How is the structure of the stratum corneum related with the main functions of the epidermis?

Describe briefly the changes that occur in keratinocytes when they migrate from the stratum basale to the stratum corneum. How is the structure of the stratum corneum related with the main functions of the epidermis?

Anatomy & Physiology

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Chapter5: The Integumentary System

Section: Chapter Questions

Problem 5RQ: The papillary layer of the dermis is most closely associated with which layer of the epidermis?...

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Keratinocytes are the major cellular components of the epidermis. They are found in the four major epidermal strata: basale, spinosum, granulosum and corneum. Explain the characteristics of and the changes in the keratinocytes as they journey from the deepest to the most superficial epidermal strata.
The cuticle is a complex non-cellular layer secreted by the epidermis. It is the seat of complex processes and changes. Along this line, how are sclerotization and melanization of the integument influenced by the hemolymph? Elaborate.
Cells of the epidermis derive from stem cells of the stratum basale. Describe how the cells change as they become integrated into the different layers of the epidermis. What determines the color of skin, and what Is the process that darkens skin when it is exposed to UV light?
Identify and explain three functions of the epidermis.
A skin Cancer of the stratum ( keratinocyte cell line ) in the epidermis would be?
Briefly answer the following questions:1. Cells of the epidermis are derived from stem cells of the stratum basale. Describe how the cells change as they become integrated into the different layers of the epidermis.2. What structures are produced from keratinization of the epidermis?
1.) Epidermis of the skin. Draw the LPO and HPO view of the epidermis and identify its different layers. 2.) Draw an HPO view of the dermis and label its layers/parts. 3.)What are the cell junctions in the stratum spinosum? 4.) Where are the melanocytes located? 5.) Describe the structure and development of the skin and the associated integumentary structures.6.) What are the functions of the integument and its associated structures? 7.) What do all living things have in common? 8.) What kinds of organisms are composed of prokaryotic cells? Eukaryotic cells? What kinds of cells do humans have? 9.) What is tissues?10.) List the four principal tissue types. 11.) Which is true? a. Epithelial tissues are well supplied with blood vessels. b. Connective tissues consist mostly of cells with little extracellular matrix. c. Blood is a connective tissue.
List the four types of cells in the epidermis and their function: 1. 2. 3. 4. Which of these cells is the most abundant?
List the five cell types of the epidermis. Describe theirlocations and functions.
Name the tissue type composing the epidermis. List its major layers and describe the functions of each layer.
From deep to superficial, the order of the strata of the epidermis is Spinosum - granulosum - basale - lucidum - corneum Basale - granulosum - spinosum - lucidum - corneum Corneum - granulosum - lucidum - spinosum - basale Corneum - lucidum - granulosum - spinosum - basale Basale spinosum - granulosum - lucidum corneum
How long does it take a keratinocyte to reach the stratum corneum from the stratum basale?