Biology Terms

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Across
  1. 1. first visual evidence of interaction between dermis and epidermis
  2. 5. type of cell that are an extension of the body's immune system
  3. 7. cells contain keratohyalin granules in this layer of skin, new lamellar granules become more active
  4. 11. trimester where significant growth occurs, volar padd regression, minutiae set, and sweat ducts and pores
  5. 15. transient swellings of tissue under the epidermis on hands and feet
  6. 16. the primary cell of the epidermis
  7. 17. tissue of volar pads
  8. 20. outerlayer acts as a receptor organ
  9. 22. cell proliferatoins resulting in downfolds of the basal epidermis
  10. 24. by this many weeks EGA the joints of the hand have formed and appear similar in proportion to that of an infant
  11. 25. keratinocytes undergo an abrupt transition in this layer, cells are keratinized and have completed their programmed cell death
  12. 26. percent of palms that have no pattern in the hypothenar
  13. 27. only appendage of the friction ridge skin
  14. 29. high, symmetrical pads tend to make this pattern with high ridge count
  15. 32. when volar pads are overtaken by the faster growth of the larger surrounding surface
  16. 34. mad by low volar pads
  17. 35. area of the foot with the hightest prevalence of classifiable patterns
Down
  1. 2. lamellar granules appear in cells as they are pushed toward the limit of this layer of skin, shape becomes more rectangular
  2. 3. layer of connective tissue
  3. 4. type of cell that are an extension of the nervous system and participate in the transmission of the sensation of touch
  4. 6. growth of hands and feet, regular flexion creases, volar pads
  5. 8. innermost layer of epidermis
  6. 9. produce the pgments that are deposited into the keratinocytes
  7. 10. link basal cells to dermis
  8. 12. shape of volar pad that tend to make loops
  9. 13. regions of divergence or convergence
  10. 14. drive the timing of the ridge development
  11. 18. malleable, peglik projections of the papillary dermis between the primary and secondary ridges
  12. 19. loose connective tissue made of fat cells and serve as energy reserve
  13. 21. first volar pad to appear
  14. 23. the significant epidermal layer that allows skin to act as a major barrior, brick and mortar model
  15. 28. trimester where mainly a period for protected growth for the fetus
  16. 30. remnants of dermis left projecting upward into the epidermis when anastomoses bridge primary and secondary ridges
  17. 31. first creast to appear around 8 weeks EGA followed by flexion creases in fingers
  18. 33. shape of volar pad that tend to make whorls