[AB] Identify the structure formed by the cells A and B together.  [F] Identify the blood vessel labeled F

21. [21] Identify this structure. 22. [22] Identify this connective tissue structure and INCLUDE ORGAN NAME.

39. [39] Identify this elevated region around the duct. 40. [40] Identify this connective tissue structure and INCLUDE ORGAN NAME.

49. [Organ] Identify the organ in the image below. 50. [D] Identify the cell at the tip of the pointer labeled D.

21. [21] Identify this structure (not region) and INCLUDE ORGAN NAME. 22. [22] Identify this connective tissue structure and INCLUDE ORGAN NAME.

13. [13] Identify these multiple structures. 14. [14] Identify this opening.

[A] Identify the passageway labeled A. [B] Identify the muscle labeled B.

25. [D] Identify the tube labeled D.  26. [E] Identify the organ labeled E.  27. [F] Identify the tube labeled F.  28. [G] Identify the organ labeled G. 

35. [35] Identify this raised region of the organ and INCLUDE ORGAN NAME. 36. [36] Identify this organ.

29. [A] Identify the tube labeled A. 30. [B] Identify the organ labeled B. 31. [C] Identify the organ labeled C. 32. [D] Identify the organ labeled D.