Where are collagen and elastic fibers found?

Dense connective tissues can also be elastic. For example, the walls of arteries (see Fig. 29.8) and the dermal layer of skin consist of both collagen and elastic fibers. Energy from each heartbeat stretches the elastic fibers in the walls of arteries.

Where is elastin fiber found?

Elastic fibers are found in the skin, lungs, arteries, veins, connective tissue proper, elastic cartilage, periodontal ligament, fetal tissue and other tissues which must undergo mechanical stretching.

Are collagen fibers found in the dermis?

The dermis is a connective tissue layer of mesenchymal origin located deep to the epidermis and superficial to the subcutaneous fat layer. [1] The composition of the dermis is mainly fibrous, consisting of both collagen and elastic fibers.

Where are elastic fibers found in the skin?

In the upper reticular dermis there are finer fiber structures, so-called elaunin fibers, and extending from these fibers perpendicular to the skin surface are fine elastic fiber structures, so-called oxytalan fibers, which terminate just below the dermal-epidermal basement membrane (Fig. 1d).

What is collagen fibers?

Collagen fibers are the structural elements found in vertebrate tissues that transmit forces, store, and dissipate energy. Collagen fibers limit the deformation of tendon and other load bearing tissues and have a hierarchical structure that includes collagen molecules, microfibrils, fibrils, fibers, and fascicles.

What cell produces collagen?

fibroblasts
The process of collagen synthesis occurs mainly in the cells of fibroblasts which are specialized cells with the main function of synthesizing collagen and stroma.

What layer of skin contains collagen and elastin fibers?

dermis
The dermis is a connective tissue layer sandwiched between the epidermis and subcutaneous tissue. The dermis is a fibrous structure composed of collagen, elastic tissue, and other extracellular components that includes vasculature, nerve endings, hair follicles, and glands.

Does the dermis contain collagen and elastin fibers?

Your dermis contains collagen and elastin, which help make your dermis thick and supportive of your skin’s overall structure. All of your connective tissues, nerve endings, sweat glands, oil glands and hair follicles exist in your dermis.

Where is the dermis?

Which cells produces collagen and elastic fibers?

The most numerous cell types are fibroblasts . In addition, other fibers such as collagen, elastic, and reticular fibers are present. Also, look for this type of connective tissue surrounding blood vessels and underlying the epithelium of the digestive tract. Slide 43 Thick Skin, Sole of the Foot.

What is the papillary layer?

(PA-pih-LAYR-ee DER-mis) The thin top layer of the dermis (the inner layer of the skin). The papillary dermis has connective tissue and blood vessels that give nutrients to the epidermis (the outer layer of the skin) and that help control the temperature of the skin.