Cosmetics that can reduce skin pigmentation work in the following ways, except…. A. Exfoliate the skin B. antioxidants C. inhibits melanosome transfer D. control tyrosinase activity
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14. Cosmetics that can reduce skin pigmentation work in the following ways, except….
A. Exfoliate the skin
B. antioxidants
C. inhibits melanosome transfer
D. control tyrosinase activity
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- 20. The use of natural ingredients of licorice root extract as an additional ingredient in the realm of cosmetics can have an effect of up to…. A. skin brighteningB. depigmentationC. skin whiteningD. skin lighteningA fixative serves to :- a. stop tissue decay. b. improve contrast. c. repair a damaged tissue. d. bind epithelial cells together. e. bind cardiac myocytes together.16. Skin plays a vital role in vitamin D synthesis. Which of vitamin D synthesis steps do not happen in the skin? a. 7-dehydrocholesterol is converted into vitamin D3 b. UV absorption by 7-dehydrocholesterol c. vitamin D3 is converted into vitamin D d. a and b e. a, b, and c
- 26. The skin plays a vital role in vitamin D synthesis. Which of vitamin D synthesis steps happens in the skin? a. 7-dehydrocholesterol is converted into vitamin D3 b. UV absorption by 7-dehydrocholesterol c. vitamin D3 is converted into vitamin D d. a and b e. a, b, and cne definitións below with the correct term: rickets A. peptide that promotes cell division in basal cells and accelerate production of keratin to stimulate epidermal development or repair В. vitiligo C. albinism skin pigmentation condition with normal distribution of melanocytes, but absence of melanin * production D. melanoma condition where legs are curved due to lack of vitamin D3 epidermal growth fa E. more severe form of skin cancer and can metastasize quickly carotene F. skin pigmentation condition as a result of sustained reduction in oxygen level G. yanosis1. Which of the following is a word root combining form for "skin"? A. Ser/o B. Muc/o C. Dermat/o D. Acr/o 2. Which of the following word root combining forms means "form or structure"? A. Epitheli/o B. Blast/o C. Morph/o D. Derm/o 3. Which of the following is a suffix that means inflammation? A. -logy B. -it is С. -osis D. -pathy 4. Cyt/o is a combining form that means: А. Неad В. Тail C. Blue D. Cell 5. Cardi is an example of what word part? A. Suffix B. Wood root C. Combining form D. Prefix
- The color of the skin, hair, and eyes due to a pigment called: OA. cyctochrome B. melanin OC. keratin O D. heparin 귀12. Describe the basic structure and functions of sweat glands, sebaceous glands, nails, hair and| sensory receptors. +o mmaintMelanocytes and keratinocytes work together in protecting the skin from UV damage when keratinocytes ________ a.maintain the appropriate pH in order for the melanocyte to synthesize melanin granules. b.provide the melanocyte with nutrients necessary for melanin synthesis. c.maintain the appropriate temperature so the product of the melanocyte will not denature. d.accumulate the melanin granules on their superficial portion, forming a UV-blocking pigment layer.
- The following is true for people with light skin: a. A and B b. A - they should spend about 5-10 minutes several times a week in midday sun to ultimately produce vitamin D c. C - they should never use sun screen when outside if they want to make Vit D d. B - their skin cannot tolerate as much sun as people with darker skin before being damaged e. A, B, C, and D f. A, B, and C g. D - they can tolerate more UV rays than people with darker skin1. Why is important that epidermis serve as a barrier against UV rays, yet not block them out completely? 2. Review the structure and function of the skin by explaining •the mechanisms involved in thermoregulation •variations in skin color •abnormal coloration of the skin (for example, cyanosis, jaundice, and pallor); and •the occurrence of acne. 3. Do you think that humans derive any important benefit from contraction of the arrectores pilorum muscles? Justify your answer 4. The relative hairlessness of humans is unusual among mammals. Why should it be that we have any hair at all? 5.Compounds such as lead, zinc, and arsenic may accumulate in the hair and nails. Chemical toxins from pesticides and pollutants may accumulate in the adipose tissue (subcutaneous fat) of the hypodermis. Discuss some of the possible clinical situations where this knowledge would be of importance. 6.During the aging process, the skin becomes drier, wrinkled, and slower to heal. Knowing that these…1. Complete the table below with information about the different types of cells of the epidermis. Cell Type 1. Brief description of unique cell features Found in which Abundance of layer(s) of epidermis? Name all that apply cells Keratinocyte Stratum basale • Straturn Cells that mony facture Keratin. Linked by numerous desmosomes. SPISOSUM Melanocyte Protein melanin SKIN piogment rangines prom o rovge. red to brown-black. estratum basale Dendritic cells • Stratum Spinosum Pralect the skin ond deeper tissues From pathogens. Tactile/Merkel Cells Sensory receplars Delect light Houch and diffentiale Sapes ond Hexture. ostratum basale