. Human embryology and morphology. Embryology, Human; Morphology. 182 HUMAN EMBRYOLOGY AND MORPHOLOGY. in front with the basis of the cornea; behind, it is continuous with the mesoblast of the vitreous humour (Fig. 148). conjunctiva epiblast outer or \ pigment layer] inner layer of retina Vitreous hyaloid optic nerue-. mesoblast epithet, of cornea basis of cornea and capsule of lens. lens. lentic. cavity uvea pigment layer of retina optic fibres / inner ,ct^er °f retim (basis of middle and outer I tunics of eyeball Fig. 14S.—Diagrammatic Section of the Eye showing the Parts formed from
. Human embryology and morphology. Embryology, Human; Morphology. 182 HUMAN EMBRYOLOGY AND MORPHOLOGY. in front with the basis of the cornea; behind, it is continuous with the mesoblast of the vitreous humour (Fig. 148). conjunctiva epiblast outer or \ pigment layer] inner layer of retina Vitreous hyaloid optic nerue-. mesoblast epithet, of cornea basis of cornea and capsule of lens. lens. lentic. cavity uvea pigment layer of retina optic fibres / inner ,ct^er °f retim (basis of middle and outer I tunics of eyeball Fig. 14S.—Diagrammatic Section of the Eye showing the Parts formed from the Mesoblast. (After His' Model of the eye of a 3rd mouth human embryo.) (2) The vitreous humour.—This is formed out of the mesoblast which fills the optic cup behind the lens. The closure of the choroidal fissure cuts the vitreous humour off from the mesoblast which covers the outer layer of the optic cup and becomes trans- formed into the tunics of the eyeball. The vitreous humour— like Wharton's jelly of the umbilical cord—represents an early form of embryonic tissue. It consists of cells imbedded in a jelly-like matrix. All the connective tissues of the body are originally of this type, and remain as such until the fifth month (Berry Hart). (3) The hyaloid artery.—This is the vessel which supplies the mesoblast of the optic cup ; it terminates in the capsule of the lens (Fig. 148). In the 7th month foetus a trace of the artery can still be seen passing through the vitreous humour from the optic. 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 Keith, Arthur, Sir, 1866-1955. London : E. Arnold
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectembryol, bookyear1902
