Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Papillary Dermis01:11

Papillary Dermis

2.5K
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...
2.5K
Reticular Dermis01:15

Reticular Dermis

2.3K
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...
2.3K
Classification of Epithelial Tissues: Glandular Epithelium01:20

Classification of Epithelial Tissues: Glandular Epithelium

8.2K
The glandular epithelium is made of one or more epithelial cells modified to synthesize and secrete chemical substances. Glandular epithelia can be classified based on cell number. Unicellular glands have individual secretory cells scattered across the epithelial monolayer. In contrast, multicellular glands consist of a hollow tubular duct attached to the cluster of secretory cells located in the deep pockets.
Multicellular glands are formed during early development when epithelial budding...
8.2K
Classification of Epithelial Tissues: Overview01:22

Classification of Epithelial Tissues: Overview

12.4K
Epithelial tissues are classified according to the shape of the cells and the number of cell layers formed. Cell shapes can be squamous (flattened and thin), cuboidal (square-like, as wide as it is tall), or columnar (rectangular, taller than it is wide). Additionally, the nucleus shape helps identify the type of epithelial cells. Squamous cells have flattened disc-shaped nuclei, cuboidal cells have spherical nuclei, and columnar cells have elongated nuclei.
Based on the number of cell layers,...
12.4K
Classification of Epithelial Tissues: Stratified Epithelium01:29

Classification of Epithelial Tissues: Stratified Epithelium

8.6K
Stratified epithelium consists of several stacked layers of cells. They provide the durability to withstand constant physical and chemical attacks. Stratified epithelium is named after the shape of the most apical layer of cells. Stratified squamous epithelium is the most common type found in the human body. In this tissue, the apical cells are squamous, whereas the basal layer contains either columnar or cuboidal cells. The basal cells divide to form new daughter cells, which gradually become...
8.6K
Hypodermis01:02

Hypodermis

3.8K
The hypodermis (the subcutaneous layer or superficial fascia) is present directly below the dermis. It connects the skin to the underlying fascia (fibrous tissue) of the bones and muscles. It is not strictly a part of the skin, although the border between the hypodermis and dermis can be difficult to distinguish. The hypodermis consists of well-vascularized, loose, areolar connective tissue and adipose tissue, which functions as a mode of fat storage and provides insulation and cushioning for...
3.8K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The Superficial Temporal Artery: Anatomical Variations in Course, Branching Patterns, Depth Relationships, and Anastomotic Networks-A Systematic Review of Cadaveric and Imaging Evidence.

The Journal of craniofacial surgery·2026
Same author

Facial Retaining Structures are Not True Ligaments: Clinical Application.

The Journal of craniofacial surgery·2026
Same author

Photogrammetric Reconstruction of 3D Human Anatomical Structures and Augmented Reality via Smartphone Technology.

Clinical anatomy (New York, N.Y.)·2026
Same author

Biomechanical comparison of suture and screw fixation in PCL avulsion with variable bone quality.

Scientific reports·2025
Same author

Bilateral incomplete mandibular canals: an embryological analysis of their possible etiology.

Surgical and radiologic anatomy : SRA·2025
Same author

Anatomical Study and Classification of Foramina of the Squamous Part of the Temporal Bone.

Clinical anatomy (New York, N.Y.)·2025

Related Experiment Video

Updated: May 14, 2025

A 3D Organotypic Melanoma Spheroid Skin Model
08:49

A 3D Organotypic Melanoma Spheroid Skin Model

Published on: May 18, 2018

15.6K

A Novel Subclassification of Type 2 Dermal Insertion Structures.

Kyu-Ho Yi1,2, Jovian Wan3, Song Eun Yoon4

  • 1Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Institute, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Korea.

Dermatologic Surgery : Official Publication for American Society for Dermatologic Surgery [Et Al.]
|May 12, 2025
PubMed
Summary
This summary is machine-generated.

A new classification system for Type 2 dermal insertion structures improves facial anatomy understanding. This framework enhances precision for aesthetic procedures and facial rejuvenation techniques.

More Related Videos

Author Spotlight: Enhancing Skin Model Diversity with Cost-Effective 3D Cellular Models
08:32

Author Spotlight: Enhancing Skin Model Diversity with Cost-Effective 3D Cellular Models

Published on: October 20, 2023

2.3K
Improving 2D and 3D Skin In Vitro Models Using Macromolecular Crowding
09:14

Improving 2D and 3D Skin In Vitro Models Using Macromolecular Crowding

Published on: August 22, 2016

12.4K

Related Experiment Videos

Last Updated: May 14, 2025

A 3D Organotypic Melanoma Spheroid Skin Model
08:49

A 3D Organotypic Melanoma Spheroid Skin Model

Published on: May 18, 2018

15.6K
Author Spotlight: Enhancing Skin Model Diversity with Cost-Effective 3D Cellular Models
08:32

Author Spotlight: Enhancing Skin Model Diversity with Cost-Effective 3D Cellular Models

Published on: October 20, 2023

2.3K
Improving 2D and 3D Skin In Vitro Models Using Macromolecular Crowding
09:14

Improving 2D and 3D Skin In Vitro Models Using Macromolecular Crowding

Published on: August 22, 2016

12.4K

Area of Science:

  • Anatomy
  • Facial Aesthetics
  • Surgical Anatomy

Background:

  • Current anatomical classifications are insufficient for dermal insertion structures.
  • Type 2 structures, connecting directly to the dermis, lack detailed subclassification.
  • Precise understanding of these structures is crucial for facial movement, support, and aesthetics.

Purpose of the Study:

  • To introduce and validate a novel subclassification system for Type 2 dermal insertion structures.
  • The system is based on origin, composition, and clinical relevance.
  • Aims to enhance aesthetic and reconstructive procedures.

Main Methods:

  • Utilized detailed cadaveric dissections (n=20 hemifaces).
  • Evaluated microarchitecture and insertion patterns of muscles and ligaments.
  • Categorized structures into 4 subtypes based on anatomical origin and fiber composition.

Main Results:

  • Identified four distinct subtypes: Type 2a (direct muscle fibers), Type 2b (muscle-collagen transitions), Type 2c (true ligaments), and Type 2d (retaining ligaments).
  • The classification provides enhanced anatomical precision.
  • Improves procedural safety and guides intervention strategies for injectables, threads, and surgery.

Conclusions:

  • The proposed Type 2 subclassification offers a clinically relevant framework for dermal insertions.
  • Supports personalized aesthetic planning and dynamic facial rejuvenation.
  • Integrates structural anatomy with procedural targeting for improved outcomes.