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Across 1. The process in which a gastrula develops from a blastula by the inward migration of cells. 4. Growth of tissues in which cell proliferation is uncontrolled and progressive 7. The main structural protein found in animal connective tissue, yielding gelatin when boiled. 10. Redness, swelling, pain, tenderness, heat, and disturbed function of an area of the body, especially as a reaction of tissues to injurious agents. 13. Bone absorbing cell 18. Covered with or characterized by scales. 20. The most complex tissue in the body. It specializes in communication between the various parts of the body and in integration of their activities. 23. the removal and examination of living tissue 26. is one of the most highly specialized forms of connective tissue 27. Connective tissue membrane lining spaces between bones and joints that secretes synovial fluid 28. The differentiation of cells into specialized tissues and organs during growth. 32. Produces movement; it moves the body and its parts. 33. Any of various thin membranes, as the peritoneum, that line certain cavities of the body and exude a serious fluid. 34. A group of similar cells that perform a common function. 35. A yellowish flexible cartilage in which the matrix is infiltrated by a network of elastic fibers; it occurs primarily in the external ear, eustachian tube, and some cartilages of the larynx and epiglottis 36. agents that affect genetic activity in some way, causing abnormal cell reproduction. 38. The outer germ layer in the embryo of a metazoan. 39. The study of the microscopic structure of tissues. 40. branching or tree-like nerve cell process that receives input from other neurons and transmits impulses toward the cell body

Down 2. Tissue composed of neurons. 3. A structure by which two adjacent cells are attached, formed from protein plaques in the cell membranes linked by filaments. 5. The middle layer of an embryo in early development. 6. A large phagocytic cell found in stationary form in the tissues or as a mobile white blood cell, esp. at sites of infection. 8. A mammalian blastula in which some differentiation of cells has occurred. 9. Specialized to support the body and its part, to connect and hold them together, to transport substances through the body, and to protect it from foreign invaders. 11. Cartilage that is largely composed of fibers like those in ordinary connective tissue. 12. The action or process of regenerating or being regenerated, in particular the formation of new animal or plant tissue. 14. A cell in connective tissue that produces collagen and other fibers. 15. The colorless fluid part of blood, lymph, or milk, in which corpuscles or fat globules are suspended. 16. Are microscopic cellular membrane protrusions that increase the surface area of cells 17. covers body surfaces that are exposed to the external environment. 19. Intra cellular substance of a tissue; example, the matrix of blood is liquid 21. A translucent bluish-white type of cartilage present in the joints, the respiratory tract, and the immature skeleton 22. An epithelial tissue that secretes mucus and that lines many body cavities and tubular organs including the gut and respiratory passages. 24. Covers and protects the body surface, lines body cavities, specializes in moving substances into and out of the blood, and forms many glands 25. The connective tissue that envelops cartilage where it is not at a joint. 29. Flat bones of skull 30. A thin layer, membrane, scale, or platelike tissue or part, esp. in bone tissue. 31. Tumor or abnormal growth; may be benign or malignant 32. The epithelium that lines the pleurae, peritoneum, and pericardium. 37. A cell, group of cells, or organ producing a secretion