PHYSIOLOGY AND HISTOLOGY OF THE SKIN EXAM 1 2024

PHYSIOLOGY AND HISTOLOGY OF THE
SKIN EXAM 1 2024
The science of skin Histology and Physiology - CORRECT ANSWERS-Includes the
functions, layers and anatomy of the skin

Skin histology - CORRECT ANSWERS-Is the study of the structure and composition of
the skin tissue

Physiology - CORRECT ANSWERS-Is the study of the functions of a living organisms

An esthetician's primary focus - CORRECT ANSWERS-Is on preserving protecting and
nourishing the skin

Skin/Integumentary System - CORRECT ANSWERS-Is the largest organ in the body; it
is a strong barrier designed to protect us from the outside elements

Regulates and protects the body - CORRECT ANSWERS-Skin layers, nerves, cellular
functions, hair follicles and glands

Controls the skins intricate functions - CORRECT ANSWERS-Hormones,growth factors
and other biochemicals

Proteins - CORRECT ANSWERS-The basic material and a building blocks for our
bodies tissues

Proteins - CORRECT ANSWERS-Made up of amino acids

Proteins - CORRECT ANSWERS-Foundation of our cells and skin

Amino acids - CORRECT ANSWERS-Form peptides (part of a protein) and proteins

Peptide bonds - CORRECT ANSWERS-Hold amino acids together

Polypeptides - CORRECT ANSWERS-Chains of amino acids

Appendages of the skin - CORRECT ANSWERS-Include hair, nails, sweat glands and
oil glands

Healthy skin - CORRECT ANSWERS-Is slightly moist soft, smooth and somewhat
acidic

, Skin is - CORRECT ANSWERS-Thickest on the palms of the hands and soles of the
feet; it is thinnest on the eyelids

Six primary skin functions - CORRECT ANSWERS-Sensation, Heat regulation,
Absorption, Protection, Elimination/Excretion, Secretion; SHAPES

Sebum(oil) on the epidermis - CORRECT ANSWERS-Gives protection from external
factors such as invasion by certain bacteria

Acid mantle - CORRECT ANSWERS-Is the protective barrier made up of sebum, lipids,
sweat and water; part of the skins Natural Barrier function

Hydrolipidic - CORRECT ANSWERS-Film that protect the skin from drying out and from
exposure to external factors; An oil water balance on the skin surface

Acid mantle - CORRECT ANSWERS-Has an average pH of 5.5; balanced pH of the
skin is important for maintaining the proper acidic level of 5.5 to protect from pathogens
and for regulating enzymatic functions

Barrier function - CORRECT ANSWERS-Is the skins mechanism that protects us from
irritation and intercellular transepidermal water loss (TEWL); Damage to barrier layer
causes skin problems such as sensitivities, aging and dehydration

Transepidermal water loss (TEWL) - CORRECT ANSWERS-The water loss caused by
evaporation of the skin surface

Lipids - CORRECT ANSWERS-Substances that contribute to the barrier function of the
epidermis; are protective oils and are part of the intercellular matrix (fluid); protects the
cells from water loss and dehydration; 5% in the stratum corneum are ceramides

Intercellular matrix (fluid) - CORRECT ANSWERS-Fluid between epidermal cells

Skins most amazing feature - CORRECT ANSWERS-Is the ability to heal itself

Epidermal growth factor (EGF) - CORRECT ANSWERS-Are hormones that stimulates
skin cells to reproduce and heal

Fibroblasts - CORRECT ANSWERS-Cell stimulators; produce collagen and elastin;
proteins and peptides trigger these and cells to rejuvenate

Melanin - CORRECT ANSWERS-Another form of protection in the skin; the pigment
that protects us from the sun

Melanin - CORRECT ANSWERS-Is the pigment in the eyes, hair and skin that gives us
some protection from the UV rays emitted by the sun