Skin Structure-Test 1 Flashcards
Why is UVB radiation also known as “burning rays”?
UVB wavelengths cause cancer as well as burning of the skin.
What is NOT an element of the skin’s Acid Mantle?
a. Lipids
b. Sebum
c. Blood
d. Sweat
c. Blood
What causes skin to restore itself to its normal thickness?
Hyperproduction of cells
What is Histology?
Microscopic anatomy
Which is not a characteristic of healthy skin?
a. Smooth
b. Moist
c. Slightly rough
d. Somewhat acidic
c. Slightly Rough
What is the average temperature of the body in degrees Fahrenheit?
98.6
Why does the body perspire?
To protect from overheating
What is glycation?
The binding of a protein molecule to a glucose molecule
What is hydrolipidic film?
Oil-water balance that protects the skin’s surface.
What is the acid mantle?
Protective layer of lipids and secretions on the skin’s surface.
Where in the body are the coiled structures known as apocrine glands found?
Underarm and genital areas.
What are ceramides?
Glycolipid materials.
What is collagen?
Fibrous tissue made from protein.
What are corneocytes?
Hardened keratinocytes.
What is oil that provides protection for the epidermis from external factors and that lubricates both the skin and hair?
Sebum
What is the formal name for the horny layer?
Stratum corneum
What is the dermis?
Support layer below the epidermis
Which nerves react to heat, cold, pain, pressure, and touch?
Sensory
What causes the body to produce its own Vitamin D?
Exposure to the sun
What is not one of the six primary functions of the skin?
a. Sensation
b. Heat Regulation
c. Reflection
d. Absorption
c. Reflection
What does scar tissue lack?
Hair and sweat glands
What are most abundant in the fingertips, as opposed to other parts of the body?
Sensory Nerve Fibers
What are follicles?
tubelike openings in the epidermis
What are hair papillae?
Cone-shaped elevations at the base of the follicle
Where in the body is hyaluronic acid found?
The skin
What is the result of the contraction of the arrest or pili muscle?
Goosebumps
What are membranes of ridges and grooves that attach to the epidermis?
Dermal Papillae
How fast does hair grow?
6 inches per year
What is the technical term for the nail?
Onyx
Which nerves convey impulses from the brain or spinal cord to the muscles or glands?
Motor
If a person has a purple or bluish tone under their fingernails, then they most likely have which condition?
Cyanosis
Which of the following statements is true about the nail plate?
It contains no nerves
How is B-keratin different from A-Keratin?
It has lower moisture and fat than A-keratin
What percentage of hard B-keratin does hair contain?
90%
Estheticians should have a thorough understanding of the physiology histology of the skin for all the following reasons EXCEPT to
be able to help clients choose hormone replacement therapy programs.
What is an esthetician’s primary focus?
To preserve, protect, and nourish the skin
Estheticians should be able to interpret the effects of which factor that influences skin health and appearance?
Ultraviolet damage, hormones, and nutrition.
Estheticians who specialize in the health and beauty of skin are sometimes referred to as
Technicians
What function does the sebaceous gland perform?
Protect the surface of the skin
What are sweat glands that are found all over the body with openings on the skin’s surface through pores and that are not attached to hair follicles?
Eccrine
What are proteins?
The basic material and building blocks of the body’s tissues
What are Eccrine glands?
Sweat Glands
What is true of the stratum corneum?
It is the outermost layer of the skin
What happens in the stratum germinativum?
Cells Divide
What happens in the stratum granulosum?
Keratin is produced
What part of the skin provides a protective cushion and energy storage for the body?
Subcutaneous layer
What happens in the stratum granulosum?
Keratin is produced
Which of the following statements is true about a nail plate?
A. It is soft and thin
B. It has many blood vessels
C. It contains not nerves
D. It is composed of A-keratin
It is composed of A-Keratin
Estheticians should have a thorough understanding of the physiology and histology of the skin for all the following reasons EXCEPT to
A. Confidently treat the body to maintain optimum health
B. Understand how the skin and the other body parts work together
C. Understand the effects of ultraviolet (UV) damage, hormonal influences, and nutrition on skin health
D. Be able to help clients choose hormone replacement therapy programs.
Be able to help clients choose hormone replacement therapy programs.
When do free radicals produce more free radicals?
While causing oxidation reactions
What function do the sudoriferious gland perform?
Excrete perspiration, regulate body temperature, and detoxify the body.
What comprises about 50-70% of the skin?
Water
What causes TEWL?
Evaporation
What is telangiectasia?
Capillary wall dilation
What are glands that excrete perspiration regulate body temperature, and detoxify the body?
Sudoriferous
