Carpenter's principles of human physiology . Human Embryo ?nf, theprocess; 952 OF GENERATION :—EMBRYONIC the base of the septum nasale, it appears in the third month, and has then theform of a semi-canal. At first, the mouth is a wide cavity, which is subse-quently divided into a respiratory and digestive cavity by the lateral growthof the superior maxillary processes of the first visceral arch; thus constitutingpartitions on either side, called Palate plates, which after the eighth weekbegin to coalesce from before backward. An arrest of development at this period produces the d
Carpenter's principles of human physiology . Human Embryo ?nf, theprocess; 952 OF GENERATION :—EMBRYONIC the base of the septum nasale, it appears in the third month, and has then theform of a semi-canal. At first, the mouth is a wide cavity, which is subse-quently divided into a respiratory and digestive cavity by the lateral growthof the superior maxillary processes of the first visceral arch; thus constitutingpartitions on either side, called Palate plates, which after the eighth weekbegin to coalesce from before backward. An arrest of development at this period produces the deformity termedCleft-palate. The second visceral orliyoid arch is originally in connectionwith the base of the skull, near theposterior sphenoid bone, but subse-quently becomes segmented off, its apexor proximal portion remaining as theincus and os orbiculare in Man (whichrepresent the hyo-mandibular of Fish),whilst its distal portion is converted intothe styloid process of the temporal boneand cornu minus of the hyoid with theintervening membranous part (Fig. 365,g, ra, i). The stapes proceeds from a carti-lage
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectphysiology, bookyear1
