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 tissue. This layer is well vascularized and has a rich sensory and sympathetic nerve supply. The reticular layer appears reticulated (net-like) due to a tight meshwork of fibers. Elastin fibers provide some elasticity to the skin, enabling movement. Collagen fibers provide structure and tensile strength, with collagen strands extending into the papillary layer and the hypodermis. In addition, collagen binds water to keep the skin hydrated. Collagen injections and Retin-A creams help restore skin turgor by either introducing collagen externally or stimulating blood flow and dermis repair.

This text is adapted from Openstax, Anatomy and Physiology 2e, Section 5.1: Layers of the Skin

Tagi
Reticular DermisPapillary DermisConnective TissueCollagen FibersElastin FibersVascularizationSensory Nerve SupplySympathetic Nerve SupplySkin HydrationCollagen InjectionsRetin A CreamsSkin Turgor

Z rozdziału 9:

article

Now Playing

9.5 : Reticular Dermis

The Integumentary System

2.1K Wyświetleń

article

9.1 : Wprowadzenie do systemu powłokowego

The Integumentary System

5.8K Wyświetleń

article

9.2 : Komórki naskórka

The Integumentary System

3.1K Wyświetleń

article

9.3 : Warstwy naskórka

The Integumentary System

3.2K Wyświetleń

article

9.4 : brodawkowata skóra właściwa

The Integumentary System

2.3K Wyświetleń

article

9.6 : Tkanka podskórna

The Integumentary System

3.3K Wyświetleń

article

9.7 : Pigmentacja

The Integumentary System

2.1K Wyświetleń

article

9.8 : Zmiany koloru skóry: perspektywy kliniczne

The Integumentary System

1.5K Wyświetleń

article

9.9 : Struktury dodatkowe skóry: włosy i mieszki włosowe

The Integumentary System

1.8K Wyświetleń

article

9.10 : Dodatkowe struktury skóry: wzrost i rodzaje włosów

The Integumentary System

1.2K Wyświetleń

article

9.11 : Struktury dodatkowe skóry: paznokcie

The Integumentary System

1.4K Wyświetleń

article

9.12 : Struktury dodatkowe skóry: gruczoły potowe

The Integumentary System

1.7K Wyświetleń

article

9.13 : Dodatkowe struktury skóry: Gruczoły łojowe

The Integumentary System

1.5K Wyświetleń

article

9.14 : Funkcje sensoryczne skóry

The Integumentary System

3.9K Wyświetleń

article

9.15 : Rola skóry w syntezie witaminy D

The Integumentary System

4.4K Wyświetleń

See More

JoVE Logo

Prywatność

Warunki Korzystania

Zasady

Badania

Edukacja

O JoVE

Copyright © 2025 MyJoVE Corporation. Wszelkie prawa zastrzeżone