Because hsg is associated with sinus tract , the embryologic origin of hsg in the lower neck may be from the branchial apparatus 因?yàn)橄骂i部異位性唾液腺常伴隨管竇腔,所以其胚胎的來源可能是鰓弓器。
In case 6 , the heart looks " inverted " compared to normal ( figure 8 ) . this phenomenon is called dextrocardia , and it results from a looping anomaly during embryologic development 病例6中的心臟與正常相比看上去就像“反轉(zhuǎn)”了一樣(圖8 ) ,這稱作右位心,是由于胚胎發(fā)育過程中的心臟成環(huán)異常導(dǎo)致。
英文解釋
of an organism prior to birth or hatching; "in the embryonic stage"; "embryologic development" 同義詞:embryonic, embryonal,