A
An example of an area where Sebaceous glands are NOT located
Palms of hands and soles of feet
Which glands starts to function at puberty?
Apocrine glands
Which of the following structures are primarily responsible for fingerprints?
Sweat pores and dermal ridges
Epidermal ridges and sweat pores
Dermal ridges and epidermal ridges
Papillary layer and epidermal ridges
Reticular layer and sweat pores
Epidermal ridges and sweat pores
Which of the following conditions would NOT be seen from overexposure to UV light?
clumping of elastin fibers in the dermis - (the skin will become leathery)
activation of the immune system
increased pigmentation of the skin in fair people (tan/burn in the sun)
depleted folate in the body
activation of the immune system
These are all types of cells found in the epidermis except
melanocytes.
fibroblasts.
stem cells.
keratinocytes.
tactile (Merkel) cells.
fibroblasts.
What epidermal layer is considered the site of Mitosis?
Stratum Basale
Which of the following is most important in determining skin coloration?
Melanin
Which of the following layers of the skin relies on capillaries in the underlying connective tissue in the dermis for its nutrients?
Epidermis
-the epidermis is made of epithelia tissue, which is avascular, it gets its nutrients from the underlying connective tissue of the dermis
The role of ceruminous glands is to produce
Earwax- (Ceruman)
This layer of the epidermis consists of up to 30 layers of dead cells.
stratum Corneum (superficial layer)
What is the primary function of melanin (melanocytes)?
To provide protection against the sun’s UV rays
Type of burn that is not considered critical because they typically heal in a few days without any special attention
First Degree burn (Superficial burns)
These cells stand guard against toxins, microbes and other pathogens.
Dendrite (Langerhans) cells
What is the role of Sebum?
serves as a lubricant that prevents hair from becoming brittle and breaking, an antibacterial agent, and a protection against water loss when humidity is low.
Calluses or corns are the result of accelerated multiplication of
keratinocytes
Which is the correct sequence of epidermal layers of thick skin, from deep to superficial?
stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum
Which of the following is the most immediate threat to life from a serious burn?
Loss of body fluids
Which cells function as sensory receptors for touch?
Merkel cells
Melanoma is particularly dangerous because
Because of its rapid growth.
Name at least 5 Functions of the skin
• Protection
• Excretion
• Thermoregulation
• Nutrient storage
• Vitamin D3 synthesis
• Sensory detection
• Non-verbal communication
Which of the following epidermis components possesses a waterproofing glycolipid that functions in preventing water loss?
Lamellated granules
Which of the following strata is not visible as a distinct layer in thin skin?
Lucidum
Which of the following thick skin strata is the thickest?
Corneum
Spinosum
Lucidum
Basale
Granulosum
Corneum
What type of mole or pigmented spot on the skin would be the most concerning?
A spot with varying colors and irregular borders.
A uniformly tan mole that is 2 mm in diameter.
A small, perfectly round, uniformly red freckle.
A uniformly colored mole that has been on the skin for 10 years and is now shrinking in size.
A mole that sprouts hair.
A spot with varying colors and irregular borders.
The hypodermis usually has an abundance of this tissue.
Adipose Tissue