Electrolysis, Laser, & IPL IBEC Exam Review Questions and Correct Answers Melanin - Correct Answer Grains of pigment that gives skin & hair its color Carotene - Correct Answer yellowish pigment from carrots and tomatoes What are the three layers of skin? - Correct Answer epidermis, dermis, subcutaneous layer Epidermis is also known as? - Correct Answer the scarfskin and/or the cuticle layer Keratization - Correct Answer The process of living cells moving upward and changing into dead cells.(Cell turnover) What are the two zones of the epidermis? - Correct Answer Horny zone & Germinal Zone How many layers are in the horny zone - Correct Answer Three What are the three layers of the Horny zone (epidermis) - Correct Answer Stratum Corneum, Stratum Lucidum, & Stratum Granulosum How many layers are in the Germinal Zone? - Correct Answer Two What are the layers of the Germinal Zone? - Correct Answer Stratum Spinosum & Stratum Germinativum stratum corneum - Correct Answer outermost layer of the epidermis, which consists of flattened, keratinized cells that are bond by sebum sebum - Correct Answer oily substance secreted by sebaceous glands stratum lucidum - Correct Answer 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 1 / 2
Eleidin - Correct Answer a transparent, intermediate product of keratin maturation that allows light to pass through. Found in the stratum lucidum.stratum granulosum - Correct Answer 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 Answer 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 Answer Located in the Stratum Spinosum, langerhans cells determine the appropriate adaptive immune response (inflammation or tolerance).Langerhans cells - Correct Answer Fight infection in the skin due to phagocytosis (eating) Macrophages - Correct Answer Found within the lymph nodes, they are phagocytes that destroy bacteria, cancer cells, and other foreign matter in the lymphatic stream.Histology - Correct Answer the study of the microscopic structure of tissues (skin) List the layers of the epidermis from superficial to deep. - Correct Answer stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale List the layers of the epidermis from deep to superficial - Correct Answer stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum Dermis - Correct Answer Considered to be true skin. Collagen & elastin is found here.How many layers are in the dermis? - Correct Answer 2, papillary and reticular papillary layer - Correct Answer Outermost layer of the dermis, directly underneath the epidermis
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