The American journal of anatomy . THE AMERICAN JOURNAL OF ANATOMY, VOL. 12, NO. 1 50 H. LISSER THE CARTILAGES Thyreoid. This cartilage is easily recognized at this stage andhas a definite outline. Although it has not attained the adultshape, in all particulars, it has, nevertheless, developed into theadult type. Not all of the tissue representing this structure, iscomposed of true cartilage, and fig. 27 gives, from a lateral aspect,some conception of the relative portions of chondrification and pre-cartilage. Very little, if any, of the anterior, ventral, medianportion, between the two wings i
The American journal of anatomy . THE AMERICAN JOURNAL OF ANATOMY, VOL. 12, NO. 1 50 H. LISSER THE CARTILAGES Thyreoid. This cartilage is easily recognized at this stage andhas a definite outline. Although it has not attained the adultshape, in all particulars, it has, nevertheless, developed into theadult type. Not all of the tissue representing this structure, iscomposed of true cartilage, and fig. 27 gives, from a lateral aspect,some conception of the relative portions of chondrification and pre-cartilage. Very little, if any, of the anterior, ventral, medianportion, between the two wings is represented by cartilage, thisbeing almost entirely condensed mesenchyme. This is well illus-trated in figs. 29 and 30, which likewise depict the broad generouscurve (convex throughout) uniting the two wings ventrally. Thenotched appearance with the prominent ventral ridge is not evi-dent as yet. This ventral portion, in a vertical direction (caudo-cephalad) is not very extensive, being appreciably^ smaller in heightthan in the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1901
