. Chordate anatomy. Chordata; Anatomy, Comparative. CHAPTER 12 THE ENDOCRINAL ORGANS One necessity of a living organism is that its organs should work together. In fact, a difference between a living creature and a dead one is that the Uving organism is integrated and the dead is not. More- over, the more complex an organism, the more difficult it is to secure functional correlation among its different but interdependent parts, and the more complicated is the mechanism which accomplishes this end. -PITUITARY -PARATHYROIDS DUODENUM—/. PANCREATIC ^ A" I SUANDS Fu,. 288.—The endocrinal gland
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. Chordate anatomy. Chordata; Anatomy, Comparative. CHAPTER 12 THE ENDOCRINAL ORGANS One necessity of a living organism is that its organs should work together. In fact, a difference between a living creature and a dead one is that the Uving organism is integrated and the dead is not. More- over, the more complex an organism, the more difficult it is to secure functional correlation among its different but interdependent parts, and the more complicated is the mechanism which accomplishes this end. -PITUITARY -PARATHYROIDS DUODENUM—/. PANCREATIC ^ A" I SUANDS Fu,. 288.—The endocrinal gland