. A laboratory manual and text-book of embryology. Embryology. THE BRAIN 325 The obliquely coursing spinal nerves with the filum terminale constitute the cauda equina. THE BRAIN We have seen that in embryos of 2 to mm. the neural tube is nearly straight, but that its cranial end is enlarged to form the anlage of the brain. The appearance of two constrictions in the wall of the anlage subdivides it into the three primary brain vesicles, the fore-brain or prosencephalon, mid-brain or mesencephalon, and hind-brain or rhombencephalon (Fig. 306). .Anterior neuropore iPallium of telencephalon. P
. A laboratory manual and text-book of embryology. Embryology. THE BRAIN 325 The obliquely coursing spinal nerves with the filum terminale constitute the cauda equina. THE BRAIN We have seen that in embryos of 2 to mm. the neural tube is nearly straight, but that its cranial end is enlarged to form the anlage of the brain. The appearance of two constrictions in the wall of the anlage subdivides it into the three primary brain vesicles, the fore-brain or prosencephalon, mid-brain or mesencephalon, and hind-brain or rhombencephalon (Fig. 306). .Anterior neuropore iPallium of telencephalon. Palli, Diencephalon Anterior neuropore Mesencephalon Isthmus Corpus striatum. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Prentiss, Charles William, 1874-1915. Philadelphia, London, W. B. Saunders
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