From Embryology

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Fig. 124. Transverse section through the brain of a sheep's embryo of 27 cm. in length

(From Kolliker.)

The section of sheep brain passes through the level of the foramen of Monro.


st. corpus striatum ; m. foramen of Monro ; t. third ventricle ; pi. choroid plexus of lateral ventricle ; f. falx cerebri ; th. anterior part of optic thalamus ; ch. optic chiasma ; o. optic nerve ; c. fibres of the cerebral peduncles ; h. cornu ammonis ; p. pharynx ; sa. pre- sphenoid bone ; a. orbi tosphenoid bone ; s. points to part of the roof of the brain at the junction between the roof of the third ventricle and the lamina terminalis ; I. lateral ventricle.


Foster, M., Balfour, F. M., Sedgwick, A., & Heape, W. (1883). The Elements of Embryology. (2nd ed.). London: Macmillan and Co.

Volume 1 - The History of the Chick: Egg structure and incubation beginning | Summary whole incubation | First day | Second day - first half | Second day - second half | Third day | Fourth day | Fifth day | Sixth day to incubation end | Figures 1
Volume 2 - The History of the Mammalian Embryo: General Development | Embryonic Membranes and Yolk-Sac | Organs from Epiblast | Organs from Mesoblast | Alimentary Canal | Appendix | Figures 2

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