Electrolysis, Laser, & IPL IBEC Exam
Review Questions & Answers
Melanin Correct Ans-Grains of pigment that gives skin & hair its color
Carotene Correct Ans-yellowish pigment from carrots and tomatoes
What are the three layers of skin? Correct Ans-epidermis, dermis, subcutaneous layer
Epidermis is also known as? Correct Ans-the scarfskin and/or the cuticle layer
Keratization Correct Ans-The process of living cells moving upward and changing into dead
cells. (Cell turnover)
What are the two zones of the epidermis? Correct Ans-Horny zone & Germinal Zone
How many layers are in the horny zone Correct Ans-Three
What are the three layers of the Horny zone (epidermis) Correct Ans-Stratum Corneum,
Stratum Lucidum, & Stratum Granulosum
How many layers are in the Germinal Zone? Correct Ans-Two
,What are the layers of the Germinal Zone? Correct Ans-Stratum Spinosum & Stratum
Germinativum
stratum corneum Correct Ans-outermost layer of the epidermis, which consists of flattened,
keratinized cells that are bond by sebum
sebum Correct Ans-oily substance secreted by sebaceous glands
stratum lucidum Correct Ans-a layer of the epidermis found only in the thick skin of the
fingers, palms, and soles. Clear layer that allows light to pass through
Eleidin Correct Ans-a transparent, intermediate product of keratin maturation that allows
light to pass through. Found in the stratum lucidum.
stratum granulosum Correct Ans-a layer of the epidermis that marks the transition between
the deeper, metabolically active strata and the dead cells of the more superficial strata.
Persistent friction causes calluses on knees, elbows, & feet. (Thickness Varies)
Stratum Spinosum (Prickly Layer) Correct Ans-Several cell layers thick, cells contain a weblike
system of intermediate prekeratin filaments attached to desmosomes. Keratinocytes appear to
have spines and are scattered among abundant melanin granules and Langerhans' cells. Basal &
spinosum together form the germinativum.
, What are Langerhans cells? Correct Ans-Located in the Stratum Spinosum, langerhans cells
determine the appropriate adaptive immune response (inflammation or tolerance).
Langerhans cells Correct Ans-Fight infection in the skin due to phagocytosis (eating)
Macrophages Correct Ans-Found within the lymph nodes, they are phagocytes that destroy
bacteria, cancer cells, and other foreign matter in the lymphatic stream.
Histology Correct Ans-the study of the microscopic structure of tissues (skin)
List the layers of the epidermis from superficial to deep. Correct Ans-stratum corneum,
stratum lucidum, stratum granulosum, stratum spinosum, stratum basale
List the layers of the epidermis from deep to superficial Correct Ans-stratum basale, stratum
spinosum, stratum granulosum, stratum lucidum, stratum corneum
Dermis Correct Ans-Considered to be true skin. Collagen & elastin is found here.
How many layers are in the dermis? Correct Ans-2, papillary and reticular
papillary layer Correct Ans-Outermost layer of the dermis, directly underneath the epidermis
Review Questions & Answers
Melanin Correct Ans-Grains of pigment that gives skin & hair its color
Carotene Correct Ans-yellowish pigment from carrots and tomatoes
What are the three layers of skin? Correct Ans-epidermis, dermis, subcutaneous layer
Epidermis is also known as? Correct Ans-the scarfskin and/or the cuticle layer
Keratization Correct Ans-The process of living cells moving upward and changing into dead
cells. (Cell turnover)
What are the two zones of the epidermis? Correct Ans-Horny zone & Germinal Zone
How many layers are in the horny zone Correct Ans-Three
What are the three layers of the Horny zone (epidermis) Correct Ans-Stratum Corneum,
Stratum Lucidum, & Stratum Granulosum
How many layers are in the Germinal Zone? Correct Ans-Two
,What are the layers of the Germinal Zone? Correct Ans-Stratum Spinosum & Stratum
Germinativum
stratum corneum Correct Ans-outermost layer of the epidermis, which consists of flattened,
keratinized cells that are bond by sebum
sebum Correct Ans-oily substance secreted by sebaceous glands
stratum lucidum Correct Ans-a layer of the epidermis found only in the thick skin of the
fingers, palms, and soles. Clear layer that allows light to pass through
Eleidin Correct Ans-a transparent, intermediate product of keratin maturation that allows
light to pass through. Found in the stratum lucidum.
stratum granulosum Correct Ans-a layer of the epidermis that marks the transition between
the deeper, metabolically active strata and the dead cells of the more superficial strata.
Persistent friction causes calluses on knees, elbows, & feet. (Thickness Varies)
Stratum Spinosum (Prickly Layer) Correct Ans-Several cell layers thick, cells contain a weblike
system of intermediate prekeratin filaments attached to desmosomes. Keratinocytes appear to
have spines and are scattered among abundant melanin granules and Langerhans' cells. Basal &
spinosum together form the germinativum.
, What are Langerhans cells? Correct Ans-Located in the Stratum Spinosum, langerhans cells
determine the appropriate adaptive immune response (inflammation or tolerance).
Langerhans cells Correct Ans-Fight infection in the skin due to phagocytosis (eating)
Macrophages Correct Ans-Found within the lymph nodes, they are phagocytes that destroy
bacteria, cancer cells, and other foreign matter in the lymphatic stream.
Histology Correct Ans-the study of the microscopic structure of tissues (skin)
List the layers of the epidermis from superficial to deep. Correct Ans-stratum corneum,
stratum lucidum, stratum granulosum, stratum spinosum, stratum basale
List the layers of the epidermis from deep to superficial Correct Ans-stratum basale, stratum
spinosum, stratum granulosum, stratum lucidum, stratum corneum
Dermis Correct Ans-Considered to be true skin. Collagen & elastin is found here.
How many layers are in the dermis? Correct Ans-2, papillary and reticular
papillary layer Correct Ans-Outermost layer of the dermis, directly underneath the epidermis
