Across
- 3. loss of physical vigor and reproductive ability
- 4. characterized by the prevalence of a thick surface coat of enamel (ganoin)
- 9. means tissue formation
- 13. enlarged keratinized plates on the tips of the ungulate digits.
- 14. meaning beyond and form
- 17. collection of bones in the abdominal area
- 19. narrow gully that runs down the middle of the primitive streak
- 21. is derived from the ectoderm and produces the basal lamina
- 23. form directly within tendons
- 24. lacks enamel, dentin, and a vascular bone layer
- 25. accumulation of various protein products called keratin
- 28. composed of concentric rings or circuli
- 32. contains the pigment melanin
- 34. hypodermis is referred to as
- 35. meaning gut and formation
- 36. act of giving birth via viviparity
- 37. thought to respond to tactile stimulation
- 38. act of laying eggs
- 39. inorganic ions are deposited in the organic matrix of tissues to harden them
- 40. diverse cell found in the skin of lampreys and other fishes
Down
- 1. male gamete
- 2. thought to secrete substances that resist entry of bacteria or viruses
- 5. spaces within the matrix
- 6. calcium carbonate or calcium phosphate is deposited in the organic matrix
- 7. network of loosely connected cells
- 8. meaning egg and birth
- 10. meaning child and form
- 11. develops from mesoderm and mesenchyme and produces the reticular lamina
- 12. contains light-reflecting, crystalline guanine platelets
- 15. means organ and formation
- 16. form directly through ossification of mesenchyme
- 18. oily secretion produced by sebaceous gland
- 20. meaning live and birth
- 22. base of the hair
- 26. transformation from juvenile to adult stage
- 27. whiskers
- 29. function in chemical signaling
- 30. meaning nerve and formation
- 31. firm but flexible special connective tissue
- 33. deposition of hydroxyapatite in the organic matrix leading to bone formation