What are the two major regions of the dermis?
The dermis is divided into two layers: the papillary dermis and the reticular dermis. The papillary dermis is the superficial layer, lying deep to the epidermis.
What are the two major regions of the dermis and what components are found in each layer?
The dermis has two parts: a thin, upper layer known as the papillary dermis, and a thick, lower layer known as the reticular dermis.
Where are the two layers of the dermis?
The dermis is comprised of two layers: the papillary dermis and the reticular dermis. The papillary dermis is the more superficial of the two, and lies just beneath the epidermal junction. It is relatively thin and is made up of loose connective tissue, which includes: Capillaries.
How thick is the dermis layer of skin?
1 to 4 mm
Dermis and Subcutaneous Fat It is thicker (averages 1 to 4 mm) than the epidermis which is about as thin as piece of paper. The dermis varies in thickness. It is very thick on the back (almost 1 cm); it is very thin on the eyelid. The dermis has two main zones, the papillary dermis and the reticular dermis.
What is the thickest layer of the epidermis?
squamous cell layer
The squamous cell layer is the thickest layer of the epidermis, and is involved in the transfer of certain substances in and out of the body. The squamous cell layer also contains cells called Langerhans cells.
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.
Which of the following is found in the dermis layer of skin?
The dermis contains nerve endings, sweat glands and oil glands (sebaceous glands), hair follicles, and blood vessels. The nerve endings sense pain, touch, pressure, and temperature.
What is the most superficial layer of the skin?
Epidermis
Epidermis. The epidermis is the most superficial layer of the skin and provides the first barrier of protection from the invasion of substances into the body. The epidermis is subdivided into five layers or strata: stratum basale.
What is the superficial region of the skin?
Epidermis. The epidermis is the most superficial layer of the skin and provides the first barrier of protection from the invasion of substances into the body.
What are the 2 layers of skin?
Anatomy
- Epidermis, the top layer.
- Dermis, the middle layer.
- Hypodermis, the bottom or fatty layer.
What is the difference between superficial and deep partial thickness burns?
Distinguishing between superficial and deep partial thickness burns is important because the former may spontaneously heal on its own, while the latter is likely to require surgical treatment. Superficial partial thickness burns extend superficially into the second layer of skin.
How many layers are there in the epidermis of thin skin?
There are four layers of cells in the epidermis of thin skin. From superficial to deep, these layers are stratum _____, stratum ______, stratum ______, and stratum basale.
What are partial thickness wounds?
After a fall, there is a good chance that you scraped part of your body, most likely your knees or hands. These types of scrapes are classified as partial thickness wounds.
What is the classification of skin?
Skin is classified as either thick or thin based on two parameters; the number of epidermal _____ in the epidermis and the relative ____ of the epidermis, rather than the thickness of the entire integument. When exposed to the sun, the _____ become more active and secrete a protein that gives the skin a tanned look. Which are functions of the skin?