Dermis
Dermis - Related Videos
01:11
Papillary Dermis
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2025
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. Papillary Layer The papillary layer is made of loose, areolar connective tissue, which means the collagen and...
01:15
Reticular Dermis
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2023
The papillary and reticular dermis are the two layers of the dermis. They are made of connective tissue with fibers of collagen extending from one to the other, making the border between the two somewhat indistinct. The dermal papillae extending into the epidermis belong to the papillary layer, whereas the dense collagen fiber bundles below belong to the reticular layer. Reticular Layer Underlying the papillary layer is the much thicker reticular layer, composed of dense, irregular connective...
04:16
Isolation and Culture of Primary Schwann Cells from a Human Dermis
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2025
This video demonstrates a protocol for isolating and culturing Schwann cells from human dermis tissues. The human dermis contains various cell types, including fibroblasts and Schwann cells. After isolation, the cells are treated with an antimitotic agent to eliminate proliferating fibroblasts, resulting in a pure culture of Schwann cells.
11:28
Imaging CD4 T Cell Interstitial Migration in the Inflamed Dermis
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Cited by 11 •
2016
The mechanisms that govern the interstitial motility of CD4 effector T cells at sites of inflammation are relatively unknown. We present a non-invasive approach to visualize and manipulate in vitro-primed CD4 T cells in the inflamed ear dermis, allowing for study of the dynamic behavior of these cells in situ.
09:16
Generation of Genetically Modified Organotypic Skin Cultures Using Devitalized Human Dermis
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Cited by 22 •
2015
The goal of this paper is to provide a comprehensive and detailed protocol on how to generate genetically modified human organotypic skin from epidermal keratinocytes and devitalized human dermis.
FAQs
The papillary and reticular regions divide the dermis into organized zones, allowing its connective-tissue framework and embedded structures to work together. Within this arrangement, collagen and elastin fibers provide mechanical properties, while vessels, nerves, follicles, and glands support nourishment, sensation, temperature regulation, and skin maintenance. Studying these regions helps relate structure to function.
Collagen and elastin provide complementary mechanical properties. Collagen contributes to skin strength and structural support, whereas elastin supports elasticity. Their presence within the extracellular matrix helps the dermis maintain skin integrity while accommodating changes in tissue shape. Research on matrix remodeling examines how alterations in these components may affect repair, aging, and engineered skin substitutes.
Healing depends on coordinated activity by cells and remodeling of the extracellular matrix within the dermis. This remodeling can reorganize the connective-tissue environment as damaged skin is repaired, while dermal support for the epidermis and its associated structures is restored. These processes make the dermis an important subject in studies of wound repair and tissue integrity.
Blood vessels, nerves, and skin appendages embedded in the dermis provide several functional connections. Vessels help nourish the epidermis, nerves detect stimuli, and sweat glands contribute to temperature regulation. Hair follicles and sebaceous glands add further structural and functional complexity. Examining these components shows how dermal organization supports both local skin activity and broader physiological responses.
Biology research commonly considers dermal organization, extracellular-matrix composition, embedded vessels and nerves, and the activity of follicles and glands. Investigators also examine how the layer changes during development, injury, healing, inflammation, and aging. Together, these areas connect microscopic structure with skin function and help explain how dermal changes influence overall skin integrity.
Dermal research is especially relevant to wound repair, inflammatory skin disorders, aging, and engineered skin substitutes. These applications require understanding how connective-tissue structure, matrix remodeling, and cellular activity influence skin behavior. Comparing dermal organization across these contexts can help researchers evaluate changes in support, elasticity, sensation, nourishment, and the restoration of skin integrity.