A system of obstetrics . Fig. 54— Diagram illustrating Formation of the Foetal Appendages in a Mammal: H, head of em-bryo; , pro-amnion; pp, tail portion of pleuroperitoneal cavity; amc, tail portion of prim-itive amniotic cavity ; , tail-fold of amnion; ahf, head-fold of amnion; so, somatopleure ;sp, splanchnopleure: fa, false amnion, consisting only of epiblast; hy, hypoblast; al, aliment-ary canal, still communicating freely below with the cavity, uv, of the blastodermic vesicle,which will ultimately become the cavity of the yelk-sac, or, as it is named in mammals, theumbilical ves
A system of obstetrics . Fig. 54— Diagram illustrating Formation of the Foetal Appendages in a Mammal: H, head of em-bryo; , pro-amnion; pp, tail portion of pleuroperitoneal cavity; amc, tail portion of prim-itive amniotic cavity ; , tail-fold of amnion; ahf, head-fold of amnion; so, somatopleure ;sp, splanchnopleure: fa, false amnion, consisting only of epiblast; hy, hypoblast; al, aliment-ary canal, still communicating freely below with the cavity, uv, of the blastodermic vesicle,which will ultimately become the cavity of the yelk-sac, or, as it is named in mammals, theumbilical vesicle; zp, zona pellucida ; A, allantois. Fig. 55.—Diagram of a Fcetal Mammal, at a more advanced stage than represented in Fig. f>4. Theamniotic folds have united over the back of the embryo ; the false amnion (fa) has been sep-arated except at the lower side of the blastodermic vesicle (bl): to, true amnion ; , cav-ity of true amnion; arnc, , cavity of primitive amnion continuous with pleuroperito-neal
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectobstetrics, bookyear1
