Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
9 Cards in this Set
- Front
- Back
|
Dermal papillae |
It is uneven and has peglike projections from its superior surface. |
|
|
Melanin |
A pigment that ranges in color from yellow to brown to black is produced by special spider shaped cells |
|
|
Keratin |
A tough insoluble protein found in tissue such as hair, nails, epidermis of the skin |
|
|
List the layers of the epidermis. What specialized cells or structures are located in each layer |
Stratum corneum Stratum granulosum Stratum spinosum Stratum basale Dermis. Keratinocytes Desmoomes Epidermal dendritic cell Melanin granules Melanocyte Merkel cell Sensory nerve ending |
|
|
Describe the structure of the dermis what types of tissue are found in this layer? |
The connective tissue making up the dermis consist of two major regions, the papillary and the recticular areas, which are composed of areolar and dense irregular connective tissue |
|
|
Identify the glands found in the dermis. What is the function of each gland |
Sabaceous glands produce an oily product sebum. Keeps hair smooth and soft Sweat glands under the control if the nervous system produce sweat which is realased. Regulating body temp |
|
|
What are the names of the layer that lies underneath the skin and what is it composed of? |
Stratum basale- lies closest to the dermis and is connected to it along a wavy border that resembles corrugated cardboard. This basal layer contains the most adequately nourished of the epidermal cells because diffusing from the dermis reach them first. Stratum spinosum- cells contain thick bundles of intermediate fillaments made of pre keratin Stratum granulosum- cells are flattened organelles are deteriorating, cytoplasm full of granules Stratum corneum- cells are dead, flat membranous sacs filled with keratin. Glycolipids in extracelluar space make skin water resistant. Dermis- merkal cell sensory nerve ending |
|
|
List the function of the skin |
Mechanical damage (bumps) Chemical damage (acids and bases) Microbe damage Ultraviolet (UV) radiation (damaging effects of sunlight or tanning beds) Thermal (heat or cold) damage Desiccation (dying out) |
|
|
Describe the appendages of the skin |
Includes cutaneous glands, hair and hair follicles, and nails, each of these appendages arises from the epidermis and plays a unique role in maintaining body homeostasis Sabaceous gland or oil glands Sweat glands/ sudoferous glands |
