What is 4 skin cell types and a major function of each

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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What is 4 skin cell types and a major function of each

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Skin, the first line of defense barrier against harmful substances or mechanical and physical injury, is one of the major sensory organ that regulates the body temperature, prevents water or moisture loss, produces vitamin D, etc. It is composed of the following layers;

  • Epidermis or the outermost layer- composed of stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum and stratum basale.
  • Dermis or the middle layer
  • Hypodermis or the subcutaneous membrane

The basement membrane separates the epidermis and the dermis. New cells produced from the basement membrane are pushed to the epidermis, where it dies due to lack of nutrient supply. 

 

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