. Chordate morphology. Morphology (Animals); Chordata. lobes (Gadus, Ameiurus, many cyprinids). The olfactory bulbs may be solid and joined at the midline or separate and contain ventricles connecting with the third ventricle (Aciperuer). Much of the latter lies within the telencephalon. The cerebral lobes are of the everted type, that is, the mem- branous ependymal plate has been expanded to cover the dorsal and lateral aspects of the large basal nuclei (Figure 13-5). These nuclei are joined by the anterior commissure, which includes the pallial commissure. A small prepara- physis may project
. Chordate morphology. Morphology (Animals); Chordata. lobes (Gadus, Ameiurus, many cyprinids). The olfactory bulbs may be solid and joined at the midline or separate and contain ventricles connecting with the third ventricle (Aciperuer). Much of the latter lies within the telencephalon. The cerebral lobes are of the everted type, that is, the mem- branous ependymal plate has been expanded to cover the dorsal and lateral aspects of the large basal nuclei (Figure 13-5). These nuclei are joined by the anterior commissure, which includes the pallial commissure. A small prepara- physis may project upward from the telencephalic roof just anterior to the velum transversum. A velum is not always present. The diencephalon is much restricted and not apparent from the outside. Dorsally there is a large pineal body joined to the posterior commissure by a pineal nerve. The roof of the diencephalon is evaginated upward as a saccus dorsalis and in part overlies the basal nuclei of the telen- cephalon. The thalamic walls of the diencephalon e.\tend down and back underneath the optic lobes. The infundibu- lar evagination ends in a large saccus vasculosus. This is a optic lobe cerebellum telencephalon olfactory medulla. olfactory nerve (I) ^ i I ( olfactory bulb- pituitary saccus vasculosus inferior lobe telencephalon optic nerve (II) optic lobe pituitary V-,,*'^^^ olfactory nerve (I). 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 Jollie, Malcolm. New York, Reinhold
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