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Development of the Pharynx and Neck: Fig. 21a. Heart Visceral and Aortic Arches | Fig. 21b. Fish Heart Visceral and Aortic Arches | Fig. 22. Primitive Pharynx | Fig. 23. Floor of the Pharynx | Fig. 24. Visceral Arch | Fig. 25. External Cleft Depressions | Fig. 26. Visceral Arch Cartilages | Fig. 27. Visceral Arch Nerves | Fig. 28. Aortic Arches in adult | Fig. 29. Eight and Left Doral Aortae | Fig. 30. Parts of the Tongue | Fig. 31. Tongue | Fig. 32. Submaxillary and Sublingual Glands | Fig. 33. Visceral Clefts in the Adult | Fig. 34. Tonsil, Thymus, and Thyroid | Figures