Across
- 5. The reproductive pattern of egg laying
- 6. The act of giving birth via viviparity
- 7. A single-celled lining of body cavities
- 10. A cap of cells arched over a small blastocoel
- 12. The spreading of surface cells during embryonic gastrulation
- 15. A layer of bones matrix with its closely packed collagen fibers aligned in parallel
- 16. Loose association of cells derived from neural
- 18. Pertaining to eggs in which yolk stores are concentrated at one pole
- 21. A syncytial layer closely adhering to the uncleaved yolk
- 23. Pertaining to an egg in which the yolk is evenly distributed throughout the cytoplasm
- 26. A specific type of mineralization involving calcium carbonates (invertebrates) or calcium phosphates(vertebrates) in the matrix of special connective tissue
- 27. Loosely associated cells of mesodermal origin
- 28. A dermal bone located under and supporting an epidermal scale
- 32. Paedomorphosis produced by delayed onset of somatic development that is overtaken by normal sexual maturity
- 34. The sheet of fibrous connective tissue around cartilage
- 36. Paedomorphosis produced by precocious onset of sexual maturity in an individual still in the morphologically juvenile stage
- 38. An extraembryonic extension of the hindgut of amniote embryos that functions in excretion and sometimes in respiration
- 39. A highly ordered arrangement of bone cells into concentric rings, with bone matrix surrounding a central canal through which blood vessels and nerves run
- 40. Condensed clumps pf mesoderm
Down
- 1. The outer portion or rim of an organ
- 2. Pertaining to eggs with large quantities of stored yolk
- 3. A transport form of yolk formed in the liver of the female and carried in her blood
- 4. The process of forming an ectodermal tube
- 8. A joint through which little or no movement is permitted between articulated skeletal elements
- 9. The observation that embryonic development is conservative in that some features of ancestral embryos are retained in embryos of descendants
- 11. Pertaining to eggs with moderate amounts of stored yolk
- 13. The process by which the embryo forms a distinct endodermal tube that constitutes the early gut
- 14. Located within the cores of teeth that secrete the inner layer of dentin also arise from neural crest cells
- 17. A joint permitting considerable rotation of articulated skeletal elements, and characterized by a joint capsule, synovial membrane, and articular cartilages on joined elements
- 19. A specific type of mineralization, unique to vertebrates leading to bone formation
- 20. A urogenital duct transporting ova and often involved in protection and nourishment of the embryo
- 22. A process by which individual surface cells migrate inward to the interior of the embryo
- 24. Pertaining to the nutrition the embryo receives through the placenta or from uterine secretions
- 25. The sheet of fibrous connective tissue around bone
- 29. Specialized chorioallantoic placenta over the embryo for exchange of nutrients and gases
- 30. A process by which individual surface cells migrate inward to the interior of the embryo
- 31. The outer cellular layer of the mammalian blastocyst
- 33. Birth of young not encased in a shell
- 35. Within an evolutionary lineage, the change in time at which a characteristic appears in the embryo relative to its appearance in a phylogenetic ancestor
- 37. Spaces within the matrix