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Related Concept Videos

Cells of the Epidermis01:24

Cells of the Epidermis

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The epidermis is made of four or five layers of epithelial cells, depending on its location in the body. From deep to superficial, these layers are the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum.
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The integumentary system is the organ system that comprises the skin and its associated structures. It is the largest system in the human body and plays a crucial role in protecting and maintaining homeostasis. The integumentary system serves several functions including protection, regulation, sensation, and secretion.
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Layers of the Epidermis01:21

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The epidermis, the outermost layer of the skin, is composed of several distinct layers. From deep to superficial, the layers of the epidermis are as follows:
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Papillary Dermis01:11

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Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
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During early development, the embryo forms two types of connective tissues— the mesenchyme and mucoid connective tissue.
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Related Experiment Video

Updated: Nov 18, 2025

Cultivating a Three-dimensional Reconstructed Human Epidermis at a Large Scale
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Vernix caseoza - composition and function.

T Faist

    Ceska Gynekologie
    |February 10, 2021
    PubMed
    Summary
    This summary is machine-generated.

    Vernix caseosa, a protective skin coating, is composed of epidermal cells and lipids. This substance aids fetal skin development, protects against amniotic fluid, and offers benefits like moisturizing and healing post-birth.

    Keywords:
    biofilmcorneocytefetusnew-born childnewbornvernix caseoza

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    Area of Science:

    • Neonatal care
    • Dermatology
    • Obstetrics

    Background:

    • Vernix caseosa is a complex biological substance covering the fetus.
    • Its composition and functions are crucial for fetal development and neonatal adaptation.

    Purpose of the Study:

    • To synthesize current scientific understanding of vernix caseosa.
    • To elucidate its role during prenatal and postnatal periods.

    Main Methods:

    • Review of existing scientific literature.
    • Synthesis of data on vernix caseosa composition and function.

    Main Results:

    • Vernix caseosa comprises desquamated epidermal cells and proteolipid material.
    • Lipid content prevents fetal maceration in amniotic fluid.
    • It facilitates neonatal transition from intrauterine to extrauterine life.

    Conclusions:

    • Vernix caseosa acts as a lubricant during delivery.
    • Postnatally, it provides moisturizing, anti-inflammatory, antioxidant, and healing properties.
    • Its formation is intrinsically linked to fetal skin development.