What makes up the dermis?
The dermis has connective tissue, blood vessels, oil and sweat glands, nerves, hair follicles, and other structures. It is made up of a thin upper layer called the papillary dermis, and a thick lower layer called the reticular dermis.
What is skin dermis?
The dermis is the layer of skin that lies beneath the epidermis and above the subcutaneous layer. It is the thickest layer of the skin, and is made up of fibrous and elastic tissue. Thus it provides strength and flexibility to the skin.
What makes the dermis layer strong and elastic?
Collagen and Elastin The dermis is held together by a protein called collagen, made by fibroblasts. Fibroblasts are skin cells that give the skin its strength and resilience. Collagen is a tough, insoluble protein found throughout the body in the connective tissues that hold muscles and organs in place.
What makes up the papillary layer?
The papillary layer is defined by rete ridges (i.e. papillae) which are finger-like structures extending into the epidermis and contains thin collagen fibres, sensory nerve endings, cytoplasms and a rich network of blood capillaries.
What makes the dermis of the skin much thicker than the epidermis?
Thick skin is thicker due to it containing an extra layer in the epidermis, called the stratum lucidum. Thick skin actually has a thinner dermis layer than thin skin, but is still thicker due to the stratum lucidum layer present in the epidermis.
What is the papillary dermis?
(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.
What types of proteins make up the dermis?
The connective tissues in the dermis layer of the skin are made of collagen proteins.
What type of connective tissue makes up the dermis of the skin?
The dermis is thicker than the epidermis and is a dense, irregular fibroelastic connective tissue composed of extracellular matrix (ECM). The dermis is composed mostly of interwoven type I collagen with some type III collagen that provides the skin with its mechanical, tensile strength.
What protein makes up 5% of the dermis?
The principal component of the dermis is collagen, a family of fibrous proteins comprising at least 15 genetically distinct types in human skin. Collagen serves as the major structural protein for the entire body; it is found in tendons, ligaments, and the lining of bones, as well as in the dermis.
What type of tissue makes up the skin?
Epithelial tissue
Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).
Which tissue makes up the dermis of the skin quizlet?
What types of tissues make up the dermis? The papillary layer is areolar connective tissue, and the reticular layer is dense irregular connective tissue. Blood vessels, smooth muscle tissue, and nervous tissue are found in the dermis.
What is the primary function of the dermis?
Protection. Microorganism,dehydration,ultraviolet light,mechanical damage.
What is the dermis composed mainly of what tissue?
The dermis is composed of three types of tissues that are present throughout the dermis rather than in layers: Collagen; Elastic tissue; Reticular fibers; The papillary layer, the upper layer of the dermis, contains a thin arrangement of collagen fibers. The lower layer, known as the reticular layer, is thicker and made of thick collagen fibers
What does the dermis and epidermis have in common?
The dermis or corium is a layer of skin between the epidermis (with which it makes up the cutis) and subcutaneous tissues, that primarily consists of dense irregular connective tissue and cushions the body from stress and strain. It is divided into two layers, the superficial area adjacent to the epidermis called the papillary region and a deep thicker area known as the reticular dermis.
What are the characteristics of the dermis?
Protection – against UV; infection and mechanical,chemical or thermal insults.