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NACC EXAM (Physiology And Histology Of The Skin, D&D, Facial Machinery) – Q&A
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NACC EXAM (Physiology And Histology Of The Skin, D&D, Facial Machinery) – Q&A
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NACC EXAM (Physiology And Histology Of TheSkin, D&D, Facial Machinery) – Q&A
Largest organ of the body ✔️Ans - skin
The barrier function of the skin includes ✔️Ans - acid mantle
Hydro ✔️Ans - water
Two layers or sections of the skin ✔️Ans - epidermis and dermis
Approximately what percentage of water is in healthy skin ✔️Ans - 50-70%
Keratin and intercellular lipids are formed in the ✔️Ans - stratum
granulosum
Which layer of the skin produces melanin ✔️Ans - stratum germinativum
The junction where the dermis connects to the epidermis is called: ✔️Ans -
epidermal-dermal junction
_____ aid in the production of collagen and elastin. ✔️Ans - Fibroblasts
Subcutis or _____ tissue is found below the reticular layer. ✔️Ans - apidose
Identify the slender outgrowth of the scalp. ✔️Ans - hair
Which fibers stimulate the arrector pili muscles? ✔️Ans - motor nerves
Cells in the basal layer that produce pigment granules ✔️Ans - melanocytes
The _____ glands excrete sweat. ✔️Ans - sudoriferous
What do cells need in order to survive? ✔️Ans - nourishment, to proliferate,
and protection
Phospholipids, glycolipids, cholesterol, trigylcerides, squalene, and waxes
✔️Ans - AKA lipids
,_____ of cells are replaced by the body on a daily basis ✔️Ans - Billions
Atoms or molecules with unpaired electrons are called ✔️Ans - free radicals
True or false: Natural antioxidants are found in the skin. ✔️Ans - true
Which of the following causes premature aging of the skin? ✔️Ans -
smoking, tanning, drugs, alchol
Identify the greatest aging effect on the skin: ✔️Ans - UV rays
_____ are called the burning rays. ✔️Ans - UVB
In order to block UVA and UVB rays, sunscreens must be: ✔️Ans - broad
spectrum
Estrogen protects the skin by: ✔️Ans - being anti-inflammatory, repairing
skin tissue, and having antioxidant properties
An esthetician's primary role is to _____ and nourish the skin. ✔️Ans -
preserve, protect
What is the average square footage and weight of an adult's skin? ✔️Ans - 22
sq ft; 8-10 lbs
What does TEWL stand for? ✔️Ans - transepidermal water loss
The most amazing feature of the skin is its ability to: ✔️Ans - heal itself
Which glands excrete perspiration and detoxify the body? ✔️Ans -
sudoriferous
Skin absorbs______ and expels_____ ✔️Ans - oxygen, carbon dioxide
Appendages include: ✔️Ans - hair, nails, sweat and oil glands
Primary functions of the skin include: ✔️Ans - protection and sensation,
heat regulation and secretion, and absorption and excretion
, What does the skin protect against? ✔️Ans - outside elements and
microorganisms
Lipids ✔️Ans - protect cells from dehydration
Mitosis occurs in this layer ✔️Ans - stratum germinativum
two layers of the dermis ✔️Ans - papillary and reticular
The _____ is also referred to as the spiny layer. ✔️Ans - stratum spinosum
Describe the stratum lucidum ✔️Ans - translucent layer that allows sunlight
to pass through the skin
AKA the basal layer ✔️Ans - stratum germinativum
Thickest layer of the skin ✔️Ans - dermis
Cell division ✔️Ans - mitosis
Acid mantle ✔️Ans - protective barrier made up of sebum, sweat, water and
lipids
TEWL ✔️Ans - transepidermal water loss
When outside temperatures change the skin adjusts to ✔️Ans - warm or cool
the body
Sebaceous gland AKA ✔️Ans - oil gland
Epidermis composed of ___ layers ✔️Ans - 5
Layers of the epidermis ✔️Ans - Corneum, Lucidum, Spinosum, Granulosum,
Germinativum
Keratinocyte ✔️Ans - keratin protein cells
Keratin ✔️Ans - protein that makes up the hair, skin and nails
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