. Hand-book of physiology . e; 9, the infundibulum; 10, optic lobe; 11, optic nerves; 12,margin of the fissure leading into the lateral ventricle; 13, corpus callo-sum, at this period perpendicular in its direction. 698 DEVELOPMENT OF THE ORGANS OF SENSE. the fifth month, the middle lobes are formed; last of all, theposterior lobes are developed. The inferior horns of the lateralventricles and the hippocampi do not appear until the secondperiod; at this period also the optic thalami make their ap-pearance, and after these the tubercula quadrigemina. Development of the Organs of Sense. The eye
. Hand-book of physiology . e; 9, the infundibulum; 10, optic lobe; 11, optic nerves; 12,margin of the fissure leading into the lateral ventricle; 13, corpus callo-sum, at this period perpendicular in its direction. 698 DEVELOPMENT OF THE ORGANS OF SENSE. the fifth month, the middle lobes are formed; last of all, theposterior lobes are developed. The inferior horns of the lateralventricles and the hippocampi do not appear until the secondperiod; at this period also the optic thalami make their ap-pearance, and after these the tubercula quadrigemina. Development of the Organs of Sense. The eye is in part developed as a protruded portion of thevesicle of the third ventricle of the brain, and it contains partof the membranes of the brain, namely, the fibrous and thevascular tunic. According to Huschke, the retina is originallya vesicle-like protrusion of the brain, with the cavity of whichit communicates through the medium of the tubular opticnerve (fig. 100, a). The sac of the transparent media which fm:Tnijim j\..
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectphysiology, bookyear1
