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CRO Prep Exam 2 Questions & Answers 2024/2025 $8.99   Add to cart

Exam (elaborations)

CRO Prep Exam 2 Questions & Answers 2024/2025

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CRO Prep Exam 2 Questions & Answers 2024/2025 skin - ANSWERS- largest organ in body - 2mm thick by adulthood - becomes thinner and more susceptible to sun w/ age - covers approx. 22 sqft; 10-12 lbs; largest organ skin functions - ANSWERS- protective - sensory - regulatory most risk ...

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  • August 5, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • CRO Prep
  • CRO Prep
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CRO Prep Exam 2 Questions & Answers
2024/2025

skin - ANSWERS- largest organ in body

- 2mm thick by adulthood

- becomes thinner and more susceptible to sun w/ age

- covers approx. 22 sqft; 10-12 lbs; largest organ



skin functions - ANSWERS- protective

- sensory

- regulatory



most risk for skin cancer - ANSWERS- skin type 1 or 2

- 1+ blistering sunburns as a child

- lots of moles, freckles

- red/blonde

- light color eyes

- fair skin

- family history of skin cancer



dermis - ANSWERS- skin layer composed of blood/lymphatics, nerves, sweat glands, hair follicles

- upper 20% = dermal papillae; ridges responsible for fingerprints...papillary region

- lower 80% = reticular region



epidermis layers - ANSWERSdeepest to superficial:



basale

, spinosum

granulosum

lucidum

corneum



melanin - ANSWERS- # of melanocytes is same in all races

- released by MSH; more MSH = more melanin, darker skin



skin cancer - ANSWERS- most common form of cancer (2mil cases per year)

- mostly preventable, curable if treated early

- new cases/deaths have climbed steadily past 30 years

- sunscreen mostly used incorrectly

- sun exposure is cumulative

- lag time for 10-30yrs for clinical appearance

- early prevention is important!!!



melanoma - ANSWERS- most dangerous form of skin cancer

- arises from melanocytes in stratum basale

- most common on legs of women, trunk/face of men

- less than 5% of cases

- risk = 1 in 50 for white, 1 in 1000 for AA, 1 in 200 for hispanic



sunscreen - ANSWERS- spf 30 or higer

- apply thickly, 30 min before exposure, every 2-3hrs; should be applied last

- avobenzone, titanium dioxide, zinc oxide

- insect repellant reduces spf



basal cell - ANSWERS- 800k - 900k of skin cancer cases per year; most common type (BCC)

- starts in stratum basale

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