Skin
In adults, skin makes up what percentage of body weight?
16%
5 layers of the epidermal layer
What is stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum
What is collagen fibers
The part of the hair implanted in the dermis layer of skin
What is the root
3 pigments responsible for skin color
What is melanin, carotene, hemoglobin
Most superficial layer
What is the epidermis
The dermis is divided into 2 regions, what are they?
What are the papillary and reticular regions
Straight hair has what type of shaft?
What is a round shaft
What type of sweat gland produces a thick cloudy secretion and has a foul smell?
What is apocrine sweat glands
Second deepest part of the skin, Blood vessels, nerves, glands and hair follicles are embedded here, Composed mainly of connective tissues
What is the dermis
What layer holds the epidermis together
What is the stratum spinosum
What is responsible for our fingerprints?
What is the epidermal ridges of the papillary layer
What are the 3 layers of the root?
What are the medulla, cortex, and cuticle
What are the functions of nails?
What are Grasping objects, Manipulating objects, Protection of the tip of fingers/toes, Scratching
What layer is not part of the skin, mostly fat, anchors skin to underlying structures
What is the hypodermis
The layer of the epidermis that slows water loss from body
What is the stratum granulosum
What is the deeper portion of the dermis?
What is the reticular region
What is the oil that is secreted by the sebaceous glands
What is sebum
What is the amount of Sudoriferous glands in our body
What is 3-4 million
What are the functions of skin?
Protection, Water resistance, Temperature Regulation, sensation, Vitamin D synthesis, excretion/secretion, social functions
What are the epidermal cells and their percentage that make up the epidermis?
What is Keratinocytes 90 % of epidermal cells, Melanocytes 8% of the epidermal cells, Langerhans cells approximately 1%, and Merkel cells <1%
What are Blood vessels, nerves, glands and hair follicles
What are the functions of hair?
What are hair on the head protects scalp from injury and sunlight, Eyelashes and eyebrows protect eyes Nostril and ear hairs protect from foreign particles
What is the skin color and name that indicates a patient has an infection?
What is red and erythema